Igloohome Retrofit Lock - Bluetooth Smart Lock for Euro Cylinder Doors
At A Glance
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The Igloohome Retrofit Lock (model OE1) converts an existing euro profile cylinder into a Bluetooth-controlled smart lock - without any drilling, external hardware changes, or modifications to the outside of the door. The device mounts on the interior face of the door, clipping over the existing cylinder's thumb-turn or key. A magnetic door sensor is included to detect door state and enable auto-lock the moment the door closes. The existing physical key continues to operate the cylinder from the outside (the euro cylinder IS the mechanical override - see locks without a separate key override), unchanged.
For Airbnb and short-stay hosting, the Retrofit Lock pairs with igloohome's algoPIN technology and Airbnb Connect to automate guest access entirely. When a booking is confirmed, a unique time-limited PIN code is generated automatically and emailed to the guest 1 to 48 hours before check-in - no key handover, no rekeying, and no action required from the host. The code expires automatically at checkout. Because algoPIN codes are validated on the lock itself, they function whether or not the property has an internet connection at check-in time. For PIN code entry from outside, the igloohome Keypad must be added separately - without it, guests use Bluetooth via the igloohome app or the existing physical key.
The Retrofit Lock is designed for indoor installation on inward-opening doors. It is powered by 4 x AA alkaline batteries, which are included. The device is not rated for outdoor exposure and must be installed in a sheltered, internal location. Euro profile cylinder compatibility must be confirmed before ordering - the lock does not work with Australian oval cylinders, knob sets, or lever sets. See how to identify your existing hardware (Chapter 02) if you are unsure what you have.
Usually ships same day if ordered before 11am AEST (excludes weekends and Queensland public holidays).
The Retrofit Lock is only compatible with euro profile cylinders. It will not work with Australian oval cylinders, standard deadbolts, knob sets, or lever sets. Euro profile cylinders are common on aluminium door systems and some multi-point lock sets, but are not the standard cylinder format in most Australian residential timber doors. There are six checks to run before you order: a euro profile cylinder; a backset greater than 32mm; the cylinder sitting below the handle bar; the ability to unlock from outside with a key left in the inside of a double cylinder; key dimensions within tolerance; and, on a single cylinder, thumbturn dimensions within tolerance. Download the Does It Fit My Door compatibility guide to work through all six against your own door.
The Retrofit Lock integrates with Airbnb via Airbnb Connect. Guest PIN codes are generated automatically at booking confirmation and emailed 1 to 48 hours before check-in - guests do not need an app. Each code is valid only between the check-in and check-out times you set, and expires automatically. algoPIN codes are validated on the lock itself, so a Wi-Fi outage at the property never affects guest entry. Changing your check-in or check-out times in the igloohome app does not update the times shown on the Airbnb listing itself, so change both. For fully keyless guest access, pair with the igloohome Keypad (sold separately). Terry's regularly installs the Retrofit Lock and Keypad as a combined solution - see the installation gallery for real-world examples. See our guide to using igloohome for Airbnb in Australia, our comparison of igloohome versus TTLock for Airbnb hosting, and whether an Airbnb smart lock really needs Wi-Fi.
The Retrofit Lock is suited to residential entry doors and light commercial applications, and sits naturally alongside the rest of our front door smart locks and internal door smart locks. It is designed for indoor-face installation on inward-opening doors only. It is not rated for outdoor exposure and must not be installed on the exterior face of any door or in any exposed outdoor position. igloohome's own advice is to keep it under shelter and away from wet weather.
Key Features
- Converts an existing euro profile cylinder into a Bluetooth smart lock - no drilling, no exterior hardware changes, no modifications to the outside of the door.
- algoPIN technology generates time-limited, one-time, scheduled, or permanent PIN codes remotely via the igloohome app - no Wi-Fi required at the property.
- Airbnb Connect integration automatically generates and emails guest PIN codes at booking confirmation; codes expire at checkout with no host action required.
- Magnetic door sensor detects door closure and triggers auto-lock the moment the door closes - configurable delay or deactivatable. Detection range is up to 90mm between the centre of the multi-function button and the centre of the sensor.
- Door sensor can be mounted parallel to the lock, or perpendicular where the door frame is deeper than 50mm - the magnet lifts out of its housing for the perpendicular fit.
- Existing physical key continues to operate the euro cylinder from the exterior, unchanged. See smart locks with a backup key.
- Bluetooth 5.0 access via the igloohome app; PIN code access from outside requires the igloohome Keypad accessory (sold separately) - without it, exterior entry is via Bluetooth app or physical key only.
- Auto Unlock via Bluetooth range sensing - unlocks automatically as the owner's phone approaches.
- Night Mode - automatically locks at a set time each night.
- Schedules - disable Auto Lock during set periods for easier daytime access.
- High Torque Mode for doors that need more power to extend or retract the bolt smoothly.
- Guest Bluetooth keys: time-limited, shareable via QR code, text, email, or messaging apps. A guest key must be claimed within 1 hour of being generated or it becomes invalid, and the owner can revoke any key at any time.
- Obstruction Alarm sounds if the bolt cannot extend or retract fully.
- Volume control adjustable from 0 (mute) to 5 (loudest).
- Activity logs updated in real-time for Bluetooth unlocks; PIN code activity syncs when the owner connects to the lock via Bluetooth.
- Optional Wi-Fi Bridge (EB1, sold separately) adds remote unlock, real-time notifications, and on-demand log access from anywhere.
- Retrofit Extender included for keys or thumbturns with deeper dimensions (key depth 33-38mm; thumbturn depth 24-29mm).
- 4 x AA alkaline batteries included. Battery life rated up to 12 months.
- Calibration recommended every 9 months to maintain accurate auto-lock behaviour.
Access Methods
What's in the Box

- 1 x Retrofit Lock body
- 1 x Mounting plate
- 1 x Door sensor and magnet
- 1 x Retrofit Extender
- 1 x Double-sided tape
- 1 x Allen key
- 4 x M3 bolt screws (5mm)
- 4 x AA alkaline batteries (included)
4 x AA batteries are included. igloohome recommends Duracell, Energizer, or Panasonic alkaline batteries. Do not use Heavy Duty, Eveready, GP, or rechargeable batteries. You will also need your own #2 Phillips screwdriver - the Allen key is supplied but the screwdriver is not. The igloohome Keypad and Wi-Fi Bridge (EB1) are sold separately.
Suitable Uses
- Airbnb and short-stay rental properties on euro cylinder doors - algoPIN codes generate automatically at booking and expire at checkout; see our guide to using igloohome for Airbnb in Australia and the two approaches to short-stay access (Chapter 07)
- Short-stay properties managed via Hospitable, Uplisting, RemoteLock, or other platforms connected through the iglooconnect marketplace - see managing multiple properties (Chapter 07)
- Doors where no exterior changes are permitted - strata by-laws, rental agreements, heritage buildings, or leased commercial premises
- Aluminium door systems and European-style multi-point locks fitted with euro profile cylinders - often the same narrow-frame doors that rule out a conventional smart deadbolt
- Residential entry doors where the owner prefers to retain their existing key system alongside Bluetooth smart access
- Installations where an igloohome Keypad is also fitted, providing keyless PIN entry from outside combined with the Retrofit Lock's auto-lock and Bluetooth control inside
- Internal doors - offices, studies and store rooms - where the door already carries a euro cylinder and the priority is shared, revocable access rather than weather resistance. See internal door smart locks
Available Finish Options
White
(This Product)
STK Igloo Retrofit Lock
Finish selection does not affect functionality, compliance, or performance.
Igloohome Product Range
Full Specifications
Dimensions
Battery, Power and Backup Access
- Powered by 4 x AA alkaline batteries, included. Battery life is rated up to 12 months under normal use. See realistic smart lock battery expectations.
- igloohome recommends Duracell, Energizer, or Panasonic alkaline batteries for optimal performance. Do not use Heavy Duty, Eveready, GP, or rechargeable batteries.
- When the low battery alert activates, approximately 2 months of use remain depending on usage frequency. Replace batteries promptly when the alert appears - and see smart lock power and battery questions (Chapter 13).
- Low battery alert provided via audio and LED indicators before batteries are fully depleted - six sets of four short beeps.
- Changing batteries: rotate the screw on the underside to unlock, push the cover down and off, and lift the batteries out using the finger holes in the side of the compartment. Fit the new batteries with the round terminals to positive and the plate terminals to negative, refit the cover and turn the screw back to locked.
- Mechanical key override: the existing euro cylinder key provides physical backup access from the exterior at all times. The thumbturn and multi-function button provide exit from the interior. See what happens when the batteries die.
- Re-calibration is recommended every 9 months to maintain accurate auto-lock behaviour, and can be run again at any time from the Settings tab in the igloohome app.


Remote Access and Wi-Fi (Optional - Wi-Fi Bridge Required)
The Retrofit Lock communicates via Bluetooth 5.0 and does not connect directly to Wi-Fi. Without the optional igloohome Wi-Fi Bridge (EB1) (sold separately), the lock operates as a standalone unit - Bluetooth access, algoPIN code generation, Airbnb Connect, and auto-lock all function without internet at the property. Local access remains unaffected when the internet is down; see what happens when the internet goes down (Chapter 08) and what a gateway actually does (Chapter 08).
Adding the Wi-Fi Bridge (EB1) connects the lock to your property's 2.4GHz Wi-Fi network and enables remote unlock from anywhere via the igloohome app, real-time access notifications, and on-demand activity log retrieval. The bridge supports 2.4GHz Wi-Fi only, so the network must present a 2.4GHz band during setup - if your router uses a merged SSID, see FAQ Chapter 13 - Wi-Fi drops, the band-steering note (Chapter 08), our blog on why smart locks drop off Wi-Fi, and how the igloohome Bridge compares to other gateways.
The igloohome app is free on the App Store and Google Play ![]()
and needs a verified account before the lock can be set up. For how igloohome's platform compares with the alternatives, see Chapter 15 - Smart Lock App Platforms.
Frequently Asked Questions
When connected to Airbnb via Airbnb Connect in the igloohome app, the lock automatically generates a unique PIN code for each confirmed booking and emails it to the guest 1 to 48 hours before check-in. The code is valid between the check-in and checkout times, and expires automatically - no action needed from the host. Because algoPIN validates codes on the lock itself, the system works without Wi-Fi at the property. For keyless PIN entry from outside, the igloohome Keypad must be paired with the Retrofit Lock. Without the Keypad, guests use Bluetooth via the igloohome app, or the existing physical key. For more detail, see our guide to using igloohome for Airbnb in Australia and Chapter 07 - Smart Locks for Airbnb and Short-Stay Rentals.
The lock requires a euro profile cylinder with a backset greater than 32mm, a minimum 4mm cylinder protrusion, with the cylinder located below the door handle. The door must open inward when you leave the house. If you have a double cylinder, check you can still unlock from outside with a key left in the inside - that is one of the six checks. Key dimensions must be: thickness under 5mm, head width under 39mm, head depth under 33mm (use the included Retrofit Extender for depths 33-38mm). Thumbturn dimensions: length 20-36mm, width up to 30mm, depth up to 29mm. Download the Does It Fit My Door guide to verify all six requirements against your specific door and cylinder. Australian oval cylinders are not compatible with this lock.
No. The Retrofit Lock sits on the interior face of the door only - it has no exterior keypad. For PIN code entry from outside, the igloohome Keypad must be purchased separately and paired with the lock. Without the Keypad, exterior entry is via the existing physical key or Bluetooth via the igloohome app. Terry's regularly installs the Retrofit Lock and Keypad together as a combined solution - see the installation gallery for real examples, and browse all keypads for smart locks.
No. The Retrofit Lock mounts entirely on the interior face of the door. There are no visible changes to the exterior - the existing handles, the cylinder, and the external appearance of the door remain exactly as they were. This makes it suitable for strata properties, rental agreements, and heritage buildings where exterior modifications are not permitted.
The included magnetic door sensor is adhered to the door frame and detects when the door closes. When the door closes, the Retrofit Lock automatically extends the bolt to lock the door - no thumbturn action needed. The sensor must sit within 90mm of the multi-function button, measured centre to centre, or the lock will not see the door close. On a door frame deeper than 50mm, mount the sensor perpendicular to the lock instead of parallel. The auto-lock delay is configurable or can be deactivated. Night Mode forces locking at a set time each night, and Schedules can disable auto-lock during set daytime windows. Re-calibration every 9 months keeps auto-lock accurate as the door mechanism ages. See why auto-lock matters on a short-stay property.
Additional Information
A euro profile cylinder has a distinctive oval or elongated body when viewed from the face of the door, with a keyhole at one end and a thumb-turn at the other (for single-cylinder) or a key at both ends (for double-cylinder). The most common Australian residential cylinder format is the oval cylinder - round-bodied with a flat oval cam - and it is NOT compatible with this lock. Euro profile cylinders are standard on many aluminium door systems and European-origin multi-point lock sets. If unsure, photograph the interior face of your cylinder and contact Terry's for a compatibility check before ordering, or read how to identify your existing hardware (Chapter 02). We also stock cylinders and barrels for smart locks if a cylinder change is the simpler path.
For Airbnb and short-stay hosting, Terry's typically installs the Retrofit Lock and igloohome Keypad together. The Retrofit Lock drives the existing cylinder on the interior face; the Keypad mounts on the exterior door stile and provides keyless PIN entry for guests and residents. This combination delivers fully keyless access without any structural changes to the door, while retaining the existing key as a physical backup. See the installation gallery for real Gold Coast examples of this pairing, or book a professional installation.
With Airbnb Connect active, the workflow is: guest books, igloohome generates a unique algoPIN code for that booking window, the code is emailed to the guest automatically 1 to 48 hours before check-in, the guest enters the code on the Keypad (if fitted) or uses Bluetooth on their app, and the code expires at checkout. No host intervention at any step. One thing to watch: if you change check-in or check-out times in the igloohome app after the access email has gone out, the change applies to the next reservation rather than the current one, and it never updates the times on your Airbnb listing. The iglooconnect marketplace extends this to Hospitable, Uplisting, RemoteLock, Hosthub, SabeeApp, and Cloudbeds for hosts managing multiple properties - see property management system integration (Chapter 07).
Bluetooth unlock events are recorded in real-time and accessible remotely via the igloohome app at any time. PIN code activity (via the Keypad) is recorded on the lock and syncs to the app the next time the owner's phone connects to the lock via Bluetooth. For continuous remote log access covering both Bluetooth and PIN events, the Wi-Fi Bridge (EB1) is required. See audit trails for short-stay hosts (Chapter 07).
Before pairing, confirm the euro cylinder thumb-turn and key dimensions are within spec, and that the door opens inward. If the cylinder protrudes less than 4mm from the door face, use the supplied 3M adhesive tape to secure the lock rather than relying on the mounting plate alone - that is also the first thing to try if the lock wobbles when you turn it. Install the igloohome app and create an account before you start, and test the lock with the factory PIN before beginning the pairing process. See our guide on common smart lock installation mistakes and door misalignment (Chapter 12).
Terry's has installed the Retrofit Lock across a range of Gold Coast Airbnb and residential properties. For a walkthrough of a real installation and how the access workflow operates in practice, see our Igloohome Retrofit Lock case study and the lessons from that job. For how igloohome sits against the other platforms we stock, see the igloohome brand profile (Chapter 10) and Chapter 15 - Smart Lock App Platforms.
Warranty
1-year manufacturer warranty against defects in materials, design and workmanship of hardware components. Proof of purchase, a video clip of the defect, and proof of ownership are required for all claims. Software, consumables, cosmetic damage and normal wear and tear are not covered. Returns & Warranty | igloohome Warranty Policy
Download PDF Resources
Seven-page compatibility checklist: euro profile cylinder, backset over 32mm, cylinder below the handle bar, unlocking from outside with a key left inside, and the key and thumbturn dimension limits.
The full 47-page manual for the OE1: what's included, specifications, door, key, cylinder and thumbturn requirements, key and thumbturn installation, the Retrofit Extender, both door-sensor positions, calibration, features, app onboarding, battery changing, Airbnb Connect, the audio and LED table, and troubleshooting.
Platform-wide igloohome procedure covering every compatible igloohome lock: connecting your Airbnb account, linking a listing and setting PIN times, changing check-in and check-out times, and disconnecting a listing or the account.
Igloohome Retrofit Lock - FAQ, Setup and Owner's Guide
Everything below is specific to the Retrofit Lock (model OE1). For questions that apply to smart locks generally, see the Smart Lock FAQ (Chapter 13) and the Smart Lock Buyer's Guide.
Will It Fit My Door?
A euro profile cylinder has a distinctive keyhole shape: a circle at the top with a narrow rectangular tail below it, forming a shape a bit like a keyhole in a cartoon. Looked at from the edge of the door, the body is elongated rather than round. It is the standard cylinder across Europe and is common in Australia on aluminium entry doors and multi-point locking systems. The most common Australian residential format - the oval cylinder - is round-bodied and will not work with this lock. If you are not sure which you have, photograph the interior face of your cylinder and send it to Terry's, or work through the Does It Fit My Door guide. See also identifying your existing hardware (Chapter 02).
Greater than 32mm from the centre of the euro cylinder to the edge of the door. The lock body needs that clearance to sit on the door face without fouling the frame. If you have never measured a backset, our guide to measuring your lock backset walks through it, and what happens when you get it wrong explains why it matters. The lock also needs a cassette backset greater than 35mm.
Not automatically, but it adds one check. The Retrofit Lock clips over the key or thumbturn on the inside. If your cylinder is one that blocks the outside keyway when a key is left inside, you would be locked out any time the Retrofit Lock is fitted over an inserted key. Test it before you order: put a key in the inside, go outside, and see whether your outside key still turns. If it does, you are fine. If it does not, either change to a cylinder that allows it or move to a different lock - we stock cylinders and barrels for smart locks.
The limits are 5mm thickness, 39mm head width and 33mm head depth. Above 33mm depth - up to 38mm - the included Retrofit Extender gives the extra clearance, so a deeper key head is not a dealbreaker, it just means fitting the extender during installation. The same applies to a thumbturn: up to 29mm depth is supported, with the extender needed above 24mm. Measure before you order rather than after.
Because the lock mounts on the inside face. On an outward-opening door the lock body would sit on the hinge side of the closing action and the geometry does not work - and in practice an outward-opening door usually puts the cylinder and the frame in the wrong relationship for the sensor too. igloohome specifies inward-opening only, meaning the door swings into the house as you walk in. Handing itself is not a problem: the lock calibrates to a left-hand or right-hand door automatically during setup.
Access and Credentials
Two ways: your existing physical key, exactly as before, or Bluetooth from the igloohome app on your phone. There is no keypad on the lock itself, because the lock itself is on the inside of the door. If you want PIN entry from the street side - which is the whole point for a short-stay property - you need the igloohome Keypad as well. It is the single most common add-on to this lock and Terry's usually quotes the two together.
algoPIN is igloohome's offline code system. Instead of the lock phoning home to check whether a code is valid, the code is generated by an algorithm that the lock already knows, so the lock can validate it on its own with no internet at the door. That means you can generate a code for a guest from the other side of the world, on a property with no Wi-Fi, and it will work. It is the reason igloohome dominates the Australian short-stay market. Read the algoPIN explainer (Chapter 07) and our blog on using igloohome for Airbnb in Australia.
In the app, tap through to Access, add a Bluetooth key, fill in the window you want it valid for, create it and share it. Your guest gets a QR code or a link they can claim by text, email or messaging app. The one thing to watch: an unclaimed Bluetooth key expires one hour after you generate it. Issue it at 7pm and it must be claimed by 8pm or it is dead and you issue another. Your guest also needs the igloohome app and an account to claim it - which is exactly why PIN codes via the Keypad suit guests better than Bluetooth keys do. You can revoke any Bluetooth key at any time.
No - neither is supported on the Retrofit Lock, and there is no accessory that adds them. If fingerprint is what you want, the igloohome Deadbolt Go is the same platform with a fingerprint reader and its own keypad, though it replaces a deadbolt rather than overlaying a cylinder. For RFID, the igloohome Smart Mortice Lock V2 reads cards and fobs. Compare the full range at fingerprint smart locks and card and fob smart locks, and read how fingerprint access compares (Chapter 03).
Installation and Setup
A #2 Phillips screwdriver, which is not supplied, and the Allen key, which is. Nothing else - no drill, no hole saw, no chisel. The mounting plate fixes to the cylinder with the Allen key and adhesive, the lock body screws onto the plate with four M3 screws, and the door sensor sticks to the frame. The longest part is usually the app setup and calibration rather than the hardware. If you would rather not do it yourself, see advice and installation.
On the door frame, opposite the lock, with the adhesive backing. The measurement that matters is the distance from the centre of the multi-function button on the lock to the centre of the sensor: it must be 90mm or less, or the lock cannot tell the door has closed and auto-lock will not fire. Clean the frame with a wet wipe first and press it on firmly. If your door frame is deeper than 50mm, mount the sensor perpendicular to the lock instead: unscrew the two screws on the back of the sensor, take the casing off, and stick the magnet itself to the frame.
Calibration teaches the lock how far your particular bolt travels and how your door sits in the frame. You run it from the app: confirm the sensor is fitted, let the lock check its battery, turn the thumbturn fully to unlock, hold the door slightly ajar with the latch resting on the door, then close the door fully while unlocked. The lock then works out the rest on its own and confirms with a chime and a green LED. Run it again every nine months - doors move with the seasons, and a lock calibrated to a summer door will misbehave on a winter one.
It needs at least 4mm of protrusion for the mounting plate to grip properly. Below that, use the 3M double-sided adhesive tape supplied in the box to bond the plate to the door face as well - that is what it is there for. The same tape is the fix if the lock wobbles when you turn the mechanism after the screws are already tight. If the lock still moves, take the back body off and refit it, then recalibrate.
Install the igloohome app and create a verified account first - the lock cannot be calibrated without it. If igloohome is new to you, test the lock with its factory PIN before you start pairing. Then create a property in the app, add the lock to that property, fit the hardware and sensor, insert the batteries, and run calibration last. Doing it in that order avoids the most common frustration, which is a lock fitted and screwed down before anyone realises the account has not been verified.
Airbnb and Short-Stay Hosting
In Account Settings, choose Connect with Airbnb and confirm. Then under Reservations, add a listing, pick the Airbnb listing you want and set the PIN times to associate with it. From there it runs itself: each confirmed booking generates a code, and the guest is emailed 1 to 48 hours before check-in, on a delay you choose. The Connect with Airbnb procedure sheet has the exact taps.
It depends on timing. If the access email has not gone out yet, changing the check-in or check-out time in the app moves the PIN window with it. If the email has already been sent, the change applies to the next reservation, not the current one - the guest keeps the code and window they were given. Separately, and this catches people out: changing these times in the igloohome app does not change them on your Airbnb listing. Change both.
No. This is the strongest argument for igloohome on a short-stay property. Guest codes are validated by the lock itself, so an outage at the property has no effect on entry at all. What you lose during an outage is only the remote conveniences - live notifications and remote unlock - and only if you have fitted the optional Bridge in the first place. Compare that with a gateway-dependent platform in do Airbnb smart locks really need Wi-Fi and Wi-Fi dropouts on short-stay properties (Chapter 07).
Yes, with one caveat about timing. Bluetooth unlocks appear in the log in real time. PIN entries made on the Keypad are stored on the lock and appear in the app the next time your phone is near the lock over Bluetooth - so if you are managing the property remotely, the PIN history arrives in a batch when someone with the app next visits. Adding the Wi-Fi Bridge closes that gap and gives you both in real time from anywhere. See audit trails for hosts (Chapter 07).
Yes. Through igloohome's iglooconnect marketplace the lock connects to Hospitable, Uplisting, RemoteLock, Hosthub, SabeeApp and Cloudbeds, which covers most hosts running more than one property. See property management system integration (Chapter 07) and managing multiple properties. If you are weighing igloohome against TTLock for this, read the TTLock versus igloohome comparison.
Locking, Safety and Day-to-Day Use
Both. The delay is configurable and the function can be switched off entirely. Two further controls are worth knowing about: Schedules disables auto-lock across a window you choose - useful during the day when people are coming and going - and Night Mode does the opposite, forcing the door to lock at a set time each night whether anyone remembered or not. Auto-lock only works while the door sensor is installed and within range.
Only if you need it. It gives the motor more power to drive the bolt, and is there for doors where the bolt does not travel smoothly - a tight strike, a slightly dropped door, a stiff multi-point mechanism. It costs battery life, so leave it off unless the lock is struggling. If you are reaching for it on a new installation, the underlying problem is usually alignment rather than motor power; see door misalignment (Chapter 12).
Yes. Volume runs from 0, which is fully muted, to 5. Worth knowing for a bedroom-adjacent entry door or an apartment where late check-ins would otherwise announce themselves. Muting does not disable the LED indicators, so you can still see a confirmation.
The pattern is the message. Four rising tones with the LED flashing green twice means it unlocked. One long beep with the LED green for two seconds means it locked. A blue LED means it is connecting over Bluetooth. Three descending tones is the obstruction alarm - something is stopping the bolt. Six sets of four short beeps is the low battery warning. Three ascending tones confirms a successful pairing, and four descending beeps with a blue LED means it has been unpaired.
Power and Batteries
Up to 12 months on four AA alkalines, which are included. When the low battery alert starts, you have roughly two months of normal use left - generous by smart lock standards, but do not sit on it. Use Duracell, Energizer or Panasonic alkaline; igloohome specifically warns against Heavy Duty, Eveready, GP and rechargeable cells, which either drop voltage too early or never reach the voltage the motor wants. Our blog on the realities of electronic door locks covers what actually shortens battery life.
You use your key. This is the quiet advantage of a retrofit lock over most smart deadbolts: the mechanical override is not a hidden emergency keyway added as an afterthought, it is the original cylinder, untouched, that the door already had. There is no jumpstart port and none is needed. Read what happens when a smart lock battery dies.
Turn the screw on the bottom of the lock to unlock, push the cover down and remove it. There are finger holes in the side of the compartment to help lift the cells out. Going back in, round terminals are positive and plate terminals are negative. Refit the cover, push it up and turn the screw back to locked. If the lock will not power up afterwards, the orientation or the cover seating is almost always the cause.
Troubleshooting
Press the multi-function button and try again - if the clutch has not fully released, this happens from time to time. If it persists, remove and refit the back body, then run calibration again. A thumbturn that is stiff from day one usually points at the door or the cylinder rather than the lock, so check the bolt runs freely with the lock off before blaming the motor.
Check the batteries are the right way round and that the cover is properly fastened - a cover that is not seated makes poor contact. Fresh batteries of a recommended brand are the next thing to try. If the motor is still weak on good batteries, the door may genuinely be too heavy or too stiff for the lock, which is a compatibility answer rather than a fault. High Torque Mode is worth a try before concluding that.
Run calibration again. It is the answer to a surprising share of Retrofit Lock complaints, because the lock's whole model of your door comes from that one procedure. If the behaviour is specifically that auto-lock does not fire, measure the door sensor gap - over 90mm and the lock simply never learns the door has shut.
Take the battery compartment out, press and hold the multi-function button for ten seconds and re-insert the compartment while still holding. The lock confirms the reset with an audio and LED alert. Do this before handing a property over to a new owner, or if you are starting the pairing process again from scratch.
Suitability and Limitations
No. The Retrofit Lock is an indoor product and igloohome is explicit about it - install under shelter, away from wet weather, on the inside face of the door. It carries no IP rating. For a gate or any exposed position you want something built for it; the igloohome Smart Bluetooth Padlock 2 is the outdoor option on the same app and the same code system, and there is a wider range at smart padlocks. See also IP ratings explained (Chapter 11).
No. The Retrofit Lock carries no fire rating and no fire test evidence, so it must not go on a fire door. If you need a smart lock on a fire door there are certified options - see certified fire door smart locks (Chapter 05), our fire door smart lock range, and the blog on which apartment fire door locks are actually compliant.
This is the lock's single best use case. Nothing changes on the outside of the door - not the handles, not the cylinder, not the finish. The whole device is on the inside face, held on the cylinder and the door, and it comes off again leaving the door as it was. If you ever move, it goes with you. See strata checks before buying (Chapter 04).
Related Products, Guides and Chapters
Accessories for this lock: igloohome Keypad (exterior PIN entry - the standard pairing) · igloohome Wi-Fi Bridge EB1 (remote unlock and notifications) · all keypads for smart locks · all gateways and bridges
Other igloohome locks: Deadbolt Go (fingerprint, replaces a deadbolt) · Smart Mortice Lock V2 (leverset, adds RFID) · Smart Mortice Lock V2 + Fingerprint · Keybox 3 key safe · Smart Bluetooth Padlock 2 · the full igloohome range
Browse by what matters to you: Bluetooth smart locks · PIN code smart locks · smart locks with a backup key · app-enabled smart locks · front door smart locks · internal door smart locks · narrow frame doors · all smart locks
Buyer's Guide chapters: Ch 01 - What is a smart lock · Ch 02 - Measuring your door · Ch 03 - Access methods · Ch 04 - Door type compatibility · Ch 07 - Airbnb and short-stay · Ch 08 - Gateways compared · Ch 10 - Brand profiles · Ch 11 - Standards and IP ratings · Ch 12 - Installation and troubleshooting · Ch 13 - Smart lock FAQ · Ch 15 - App platforms
Blogs worth reading: Igloohome Retrofit Lock case study · Using igloohome for Airbnb in Australia · Airbnb smart locks - do you really need Wi-Fi? · Mechanical key override on smart locks · Measuring your lock backset · The perils of the internal snib · The realities of electronic door locks · Why smart locks drop off Wi-Fi · Three common DIY installation mistakes · Which smart lock platform is right for you? · How long do digital door locks last?
What's in the Box - Igloohome Retrofit Lock

- 1 x Retrofit Lock body
- 1 x Mounting plate
- 1 x Door sensor and magnet
- 1 x Retrofit Extender
- 1 x Double-sided tape
- 1 x Allen key
- 4 x M3 bolt screws (5mm)
- 4 x AA alkaline batteries (included)
Igloohome Retrofit Lock - Dimensions
Does It Fit My Door? - Compatibility Guide
PDF Files - Igloohome Retrofit Lock (OE1)
Seven-page compatibility checklist: euro profile cylinder, backset over 32mm, cylinder below the handle bar, unlocking from outside with a key left inside, and the key and thumbturn dimension limits. Work through it before ordering.
The full 47-page manual for the OE1: what's included, specifications, door, key, cylinder and thumbturn requirements, key and thumbturn installation, the Retrofit Extender, both door-sensor positions, calibration, features, app onboarding, battery changing, Airbnb Connect, the audio and LED table, and troubleshooting.
Platform-wide igloohome procedure covering every compatible igloohome lock: connecting your Airbnb account, linking a listing and setting PIN times, changing check-in and check-out times, and disconnecting a listing or the account.
igloohome Warranty
Warranty Summary
How to Make a Claim
- Gather the required documents: your original invoice, a video clip clearly showing the defect, and proof of ownership.
- Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries - your authorised igloohome reseller - using the Returns & Warranty page above. Warranty claims must be lodged from the country of original purchase.
- igloohome may conduct diagnostic tests to determine the nature and cause of the defect. Their assessment is final.
- If the claim is approved within the warranty period, igloohome will repair the product, replace it with the same or closest available product, or refund the amount paid - at igloohome's discretion. Repaired or replaced products continue to be covered for the remainder of the original warranty period.
- Any replaced or fully refunded product becomes the property of igloocompany and must be returned in accordance with their returns policy. Delete all personal data from the device before returning it.
Exclusions
This warranty does not cover, and will be voided by, any of the following:
- Damage from impact, shock, accident, fire, flood, earthquake, lightning or other acts of nature
- Exposure to sand, extreme temperatures or environmental conditions outside the product's specifications
- Battery corrosion or chemical corrosion
- Abuse, mishandling, improper installation, improper operation, or failure to follow igloohome's care and maintenance recommendations
- Use of incorrect electrical supply or voltage
- Damage caused by software, apps, accessories or peripheral equipment not supplied or approved by igloohome
- Unauthorised alteration, modification, adjustment or tampering
- Replacement of parts with components not supplied or approved by igloohome
- Missing accessories or external parts, unless reported within 3 calendar days of original retail purchase
- Cosmetic damage to the outer surface or finish (e.g. scratches, dents, stains)
- Deterioration due to normal wear and tear, including corrosion or rust
- Damage occurring during transit, delivery, packing, unpacking, or installation not carried out by an igloohome-authorised installer
- Non-failure problems such as reception/incompatibility issues, software updates, password resets, routine servicing, battery changes, cleaning or product demonstrations
- Software and consumable items, even if packaged or sold with the product
- Minor imperfections within design specifications that do not materially affect functionality
Important Notes
Our products come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure. Nothing in this manufacturer warranty limits or excludes your rights under the ACL.
igloohome offers an Extended Product Warranty (an additional 24 months) for products purchased and installed in Singapore only. This extended warranty is not available to customers in Australia.
igloohome requires warranty claims to be made in the country where the product was originally purchased. Claims for products purchased in Australia must be lodged through Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries - not through igloohome's Singapore or US offices.
Confused? Overwhelmed? We get it.
Choosing the right smart lock can be genuinely tricky - door types, backsets, app platforms, compatibility with your existing hardware... there is a lot to consider. We have decades of experience fitting locks of all types, including smart locks, and we are happy to help.
Our expert recommendation service is free. Upload a few photos of your door and describe what you need, and one of our qualified locksmiths will give you a personalised recommendation.
Get Your Free Recommendation →How it works - three easy steps:
1. Upload photos
A few clear shots of your door, lock and frame - inside and out.
2. We assess
Our locksmith reviews your setup and requirements - door type, weather exposure, how you want to use it.
3. You get a recommendation
A personalised recommendation tailored to your door, budget and needs. No pressure, no upsell.
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