McGrath A236 Slimline Digital Smart Lock - 5-in-1 Access, 36mm Body, 35mm Backset Euro Mortice
At A Glance
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The McGrath A236 is a slimline 5-in-1 digital smart lock built for narrow-stile aluminium doors and standard timber doors. Its 36mm wide body and the supplied 35mm backset European mortice lock (85mm centres) let it fit door frames where a full-width smart lock simply will not go - if your stile is between 50mm and 70mm, check stile width in Measuring Your Door (Chapter 02) and how to measure your backset before ordering. It is the 36mm hinged-door member of the McGrath slimline range, sitting between the 43mm A210 and the 31mm ultra-slim A231 - the slimline comparison table below shows where each fits.
Every A236 is managed through the McGrath Locks App on the TTLock platform over Bluetooth as standard, and unlocks by keypad PIN, MIFARE RFID credential, fingerprint, Bluetooth eKey, or the mechanical key in the Euro cylinder. Remote unlocking, remote credential management and cloud activity records are added by pairing a McGrath Wi-Fi gateway (sold separately) - what changes when you add a gateway is a short read before you decide whether you need one.
Where the A236 earns its place is the mortice. The supplied body is a Euro mortice with dead-latching and a lift-lever deadbolt from the McGrath 85 Series - 1.5mm SS304 case, SS304 latch and deadbolt, tested to 500,000 cycles - and the same series is stocked in 28, 30, 45, 50, 60 and 70mm backsets, so the lock can be matched to an existing door preparation rather than the door re-cut to suit the lock. Terry's Locksmiths stocks the A236 for residential, light-commercial and office entry doors across the Gold Coast, and McGrath Locks is the brand we recommend most often for TTLock-platform installs.
Usually ships same day if ordered before 11am AEST (excludes weekends and Queensland public holidays).
If the A236 does not suit your door profile, the whole narrow-frame smart lock range is in one place. Within McGrath: the A210 (43mm body, hinged doors), the A210 Double-Sided (keypad on both faces), the A231 (31mm, the slimmest, lever or hex handle) and the A231 with Hook Bolt for sliding doors. Outside McGrath, the Vault Phantom is a lower-priced slimline lever-or-knob option on the same TTLock platform. Not sure which body will fit? The door type compatibility matrix and a free recommendation from our team will settle it.
Key Features
- 5-in-1 access - keypad PIN, MIFARE RFID card or tag, fingerprint, Bluetooth eKey and mechanical key override, with Wi-Fi remote access as an optional sixth layer via gateway. How the credential types compare is in Chapter 03; the authentication stack in Chapter 01 explains why a key override still matters on a smart lock.
- 36mm slimline body - McGrath describes it as perfect for narrow stiles, and it is: the 36mm width clears the aluminium door stiles that stop most smart locks. Browse everything we stock for narrow-frame doors.
- Supplied 35mm backset Euro mortice (85mm pitch) - dead-latching SS304 latch and deadbolt in a 1.5mm SS304 case, 500,000-cycle tested, passes BHMA Level 2 and 3, lift the lever to throw the deadbolt manually. The full Euro 85 Series mortice specification sheet (PDF) shows every backset drawing. Standard Australian backset sizes explains why 35mm is the narrow-aluminium norm.
- Reversible mortice latch and standard Euro cylinder - the 85 Series latch reverses for left- or right-hand doors (how to determine your handing) and takes a standard Euro profile cylinder, so keyed-alike and keyed-to-differ override cylinders are a straight swap.
- Bluetooth management via the McGrath Locks App - a McGrath-branded build of TTLock, supported in Australia. Issue permanent, time-limited, one-time, cyclic, customised or erase passcodes and Bluetooth eKeys to family, tenants and trades - read the 24-hour activation rule before you hand a new code to a guest.
- Optional Wi-Fi remote access - pair a G5 dual-band Wi-Fi, G4 4G SIM or G3 PoE Ethernet gateway to unlock, issue and revoke credentials and view activity from anywhere - the four gateway generations compared. See the wider Wi-Fi capable smart lock range.
- Fingerprint recognition for up to 100 users - the fastest everyday method for family and staff. Enrolment technique matters on any fingerprint lock; the three-angle enrolment technique noticeably improves read reliability. More fingerprint smart locks.
- Passage mode - hold the door unlocked for business hours or a party, then return it to secure with a tap in the app. When to disable touch-to-unlock covers the related convenience settings.
- Anti-peep PIN entry and wrong-attempt lockout - pad a code with random digits either side so an onlooker cannot read it; repeated wrong entries lock the keypad out temporarily while the app and other credentials keep working. Standard on the TTLock platform.
- Activity records in the app - see who unlocked the door and when. Local records read over Bluetooth; add a gateway and they sync to the cloud in real time, which is what makes an audit trail useful for dispute resolution on rentals.
- USB-C emergency power - if the AAA batteries are ignored until flat, a power bank on the exterior USB-C port wakes the lock long enough to get in, and the Euro cylinder key works regardless - what to do when the battery dies.
- IP65 rated external module (outside face only) - dust-tight and protected against water jets for a sheltered entry. The interior module houses the battery compartment and is not weather rated - what the IP scale means, and for salt-air positions read coastal environments on the Gold Coast.
- 100,000-cycle durability test on the lock body - what a cycle rating means for lifespan.
- Distributed by LSC, supported by Terry's - McGrath, LSC and Terry's Locksmiths form the supply chain behind every McGrath install, which matters more than any single feature when you ask what actually fails on electronic locks.
Access Methods
Five ways in, plus optional remote access. The app is available for iOS and Android ![]()
(Android 4.3 / iOS 7.0 and later). Every method below is explained in plain English in Smart Lock Access Methods (Chapter 03).
Every A236 is an app-enabled smart lock out of the box. Without a gateway it is a smart lock, not a connected one - PIN, fingerprint, RFID and key all work with no internet at all, and what TTLock can do without Wi-Fi covers exactly how far that goes.
What's in the Box
- Exterior lock assembly with keypad, RFID reader and fingerprint reader x1
- Interior lock assembly with AAA battery compartment x1
- McGrath 85 Series Euro mortice lock - 35mm backset, 85mm centres (part ML-SP-M-35/85-SWING) x1
- Strike plate x1
- Euro profile cylinder with 2 x mechanical keys
- 2 x McGrath MIFARE RFID access tags
- Mounting screws and fixings
- Drill positioning template
- Installation guide
- Mini security screwdriver
Note: 4 x AAA alkaline batteries are not included - Terry's Locksmiths recommends Duracell, and the truth about smart lock battery life explains why brand matters. The Wi-Fi gateway is sold separately. Alternative 85 Series mortice backsets are available if the supplied 35mm body does not match your door preparation.
Suitable Uses
- Narrow-stile aluminium hinged doors where a full-width lock body will not fit - shopfronts, unit entries, framed glass doors. Measure the stile width and backset first; the door type compatibility matrix confirms aluminium doors are in scope.
- Timber and aluminium front doors in the 38mm to 55mm thickness range - check door thickness against that range before ordering.
- Retrofit onto an existing Euro mortice preparation - the 85 Series body is also sold in 28, 30, 45 and 50mm, 60mm and 70mm backsets, so a door already cut for a Euro lock usually needs no re-machining. Mortice versus bored cylindrical door prep explains the difference.
- Households wanting fingerprint and PIN entry for the family, with RFID tags for kids and Bluetooth eKeys for visitors and trades.
- Short-stay and rental properties on the TTLock platform - time-limited and one-time codes over Bluetooth, or add a gateway for PMS integration and remote check-in. Read how TTLock automation really works for Airbnb and which platform suits short-stay.
- Small offices, clinics and light-commercial entries where staff use fingerprint or RFID and management wants an activity record - TTLock attendance management is built in at no extra cost.
- Sliding doors: the purpose-built A231 with Hook Bolt is our first recommendation. McGrath also lists the A236 body as compatible with its Euro Hook Mortice - confirm your door with our team before ordering that configuration.
- Not suitable for: external pedestrian gates or fully exposed weather positions - the IP65 rating covers the external face only, not the internal battery unit (for a gate, see the exposed-gate smart lock range); fire doors (no fire test - the fire-rated McGrath models are the Windsor, Stafford, Hamilton and Bardon, see fire door smart locks). On a security screen door, check the screen-to-door clearance - it is the most common screen-door mistake.
- Prefer a keypad on a narrow aluminium door with no batteries at all? The mechanical digital Borg BL2702SCECP (28mm latch, key override, on-door code change) and Borg BL2002SC are the battery-free alternatives - what a mechanical digital lock is.
Available Finish Options
Matt Black
(This Product)
STK MLA236
Silver
(This Product)
STK MLA236
Matt Black and Silver are both supplied under this one listing (SKU STK MLA236) - select your finish at checkout. Finish selection does not affect functionality, compliance, or performance.
McGrath Slimline Range - Where the A236 Sits
Three slimline bodies share the same McGrath 85 Series Euro mortice, the same McGrath Locks App and the same 5-in-1 credential set. The differences that decide the purchase are body width, handle style and the door you are fitting.
Need a wider body for a standard timber door? The McGrath NX5 shares the 85 Series mortice option in a 65mm body with a large retrofit footprint. Comparing the A210 and A231 in more depth? Both pages carry their own slimline comparison tables, and Terry's writes up the whole brand in the McGrath brand profile.
Accessories and Spares
Everything below is confirmed to suit the A236 and stocked by Terry's. Mortice bodies are in the mortice locks for smart locks category, override cylinders under cylinders and barrels, blanks under keys and key blanks, credentials under RFID fobs, tags and cards and gateways under modules and Wi-Fi gateways.
Place the gateway within roughly 8 to 10 metres of the lock with as few walls as possible - gateway placement is the usual cause of a lock that "keeps dropping offline". The G-series is interchangeable across TTLock brands, so one gateway can serve a McGrath A236 and a Lockton or Vault lock on the same property.
Battery, Power and Backup Access
The A236 runs on four AAA alkaline batteries (not included) in the interior unit, operating between 4.5V and 9V. McGrath rates battery life at 12 months based on ten uses a day; a busy family door or an office entry will see less, and what really affects battery life explains why a stiff or misaligned door is the usual culprit rather than the lock. Terry's Locksmiths recommends Duracell and never mixing old and new cells. Like every battery-powered smart lock it is independent of mains power, so a power outage changes nothing at the door.
- Low-battery warning - the lock warns audibly when the battery pack drops below 4.8V, and the McGrath Locks App shows the battery level each time you connect. Change the batteries when warned; the power and battery FAQs cover what to expect.
- USB-C emergency power - a USB-C port on the exterior unit accepts a phone power bank. Plug in, wait a moment, then use your PIN or fingerprint as normal. It is temporary power to get in, not a charger - the batteries still need replacing.
- Mechanical key override - the Euro cylinder in the mortice accepts the two supplied keys at any time, batteries or not. Where the keyhole is, and why the spare key should live outside the house - a McGrath TTLock key safe on the same app is the tidy answer.
- Credentials survive a battery change - PINs, cards, fingerprints and eKeys are stored in the lock and the app, so swapping batteries does not mean re-enrolling anyone.
Wi-Fi Remote Access (Optional Gateway)
The A236 talks to your phone over Bluetooth 5.0 within roughly 10 metres. A gateway plugged in nearby bridges that Bluetooth link to your internet connection, and from then on you can unlock the door, issue or revoke codes and eKeys, and read the activity log from anywhere. What a gateway does and whether you actually need one are the two questions to settle first - many households never do.
- G5 Wi-Fi Gateway - dual-band 2.4GHz and 5GHz, our default recommendation for homes on a mesh or combined-band router because it sidesteps the band-steering problem.
- G4 Gateway - 2.4GHz Wi-Fi with a 4G SIM fallback for holiday homes and remote properties where the NBN is not reliable.
- G3 Ethernet Gateway - PoE or USB-C powered, wired only, for offices and IT-managed sites - G3 in Chapter 08.
McGrath A236 - Technical Specifications
Dimensions
All dimensions are in millimetres. The first drawing is the McGrath annotated view of the slimline lock body; the second is the Euro 85 Series mortice engineering drawing covering every backset McGrath makes. Full-width versions are in the Dimensions tab.
Frequently Asked Questions
Very likely, if the stile is 50mm or wider and the door is 38mm to 55mm thick. The lock body is 36mm wide and the supplied Euro mortice has a 35mm backset with 85mm centres. Measure three things before ordering: stile width, backset and door thickness. If the stile is under 50mm, the 31mm A231 is the better fit; if you are unsure, send us a photo of the existing lock.
No. Bluetooth is built in for local app control; remote unlocking, remote code management and cloud activity records need a G5, G4 or G3 gateway, sold separately. For most families the lock is complete without one; Bluetooth-only versus gateway lays out exactly what changes, and G2 vs G5 - gateway choice explains why we steer most homes to the G5.
Usually yes. The A236 body works with any McGrath 85 Series swing mortice, so if your existing prep is cut for a 28, 30, 45, 50, 60 or 70mm backset you order the matching body from the accessories list instead of re-machining the door. The two things that must match are the 85mm pitch and the 240mm x 22mm faceplate - backset and smart locks covers the checks, and the mortice lever and escutcheon measuring card shows where to take them.
You will be warned first - an audible alert at the lock below 4.8V and a battery reading in the app. If they do run flat, hold a phone power bank to the USB-C port on the outside unit and use your PIN or fingerprint, or use one of the two mechanical keys in the Euro cylinder. Neither wipes any codes or fingerprints. What to do when the battery dies walks through it, and a key hider or key safe outside means the spare key is there when you need it.
On a slimline mortice lock this is almost always spindle position, the wrong backset body, or door prep and alignment rather than a faulty lock - the three DIY mistakes are handle still opens when locked, wrong hardware or backset and poor door preparation. Also check the lock is not still in passage mode from setup. Ch 12's symptom-to-fix table covers the rest, and Terry's installs across the Gold Coast if you would rather not.
Additional Information
- Set the lock up in the app before you do anything else. A new TTLock-platform lock sits in an always-open state until batteries are fitted and an administrator is set in the McGrath Locks App - that is why a freshly fitted lock "won't lock". Add the lock over Bluetooth first (manual page 15), then enrol fingerprints and cards. Pick the app up from the TTLock App User Manual page.
- New PIN codes and the 24-hour rule. A permanent passcode created in the app must be used at the keypad within 24 hours or it lapses - the single most common TTLock support call. How to stop codes expiring and the activation window for each passcode type are worth two minutes before you hand a code to a tenant or cleaner.
- Bluetooth-only installs drift. Without a gateway the lock's clock is only corrected when a phone connects, and a drifted clock makes time-limited codes fail at the keypad. Calibrating without a gateway (manual page 17) takes seconds; a gateway does it automatically.
- Coastal and sheltered positions. The IP65 rating is for the outside unit and means dust-tight with protection against water jets - a covered entry, not a fully exposed door. Salt air is a separate question from rain: read coastal Queensland is not gentle and Queensland-specific considerations, and rinse and wipe the exterior periodically if you are near the beach.
- Selling or re-letting the property? Transfer the lock to the new owner in the app rather than factory-resetting it - the five-step handover checklist and the erase code (manual page 48) cover it. Keyed-alike sites should also change the override cylinder.
Warranty
12-month warranty against defects in materials and workmanship (24-month on ALBION, ASCOT, ASHGROVE, BARDON, GRANGE, HAMILTON, KEDRON, MANLY, SANDGATE, STAFFORD, ULTRA SECUA and WINDSOR models). McGrath Locks will repair, replace, or refund at their discretion. Proof of purchase required for all claims. Returns & Warranty | McGrath Locks Warranty
Download PDF Resources
McGrath's current two-page specification sheet: cover with both finishes, then the full technical table - 38-55mm door thickness, 320 x 36 x 24.3mm case, 58.5mm handle projection, credential capacities, power figures, operating environment and the 12-month warranty. The spec table is on page 2.
McGrath's earlier one-page marketing sheet: unlock-method icons, product overview and an ML-A236 data list. Superseded on specifications by the Technical Specifications sheet above; useful for its passage-mode and mortice-compatibility notes.
The McGrath 85 Series swing mortice family supplied with the A236: SS304 construction, 500,000-cycle rating, BHMA Level 2 and 3, part numbers and dimension drawings for every backset from 28mm to 70mm. Read with how to measure your backset.
The 56-page platform manual behind the McGrath Locks App - registration, adding a lock (page 15), passcode types (page 24), IC cards (page 32), fingerprints (page 34), transferring a lock (page 48) and gateways (page 52). Generic TTLock edition; the McGrath app shares the same menus. Also hosted on our TTLock App User Manual page.
The McGrath Locks mobile app is a customised, McGrath-branded platform tailored specifically for the McGrath Locks product range. The app is managed, supported and distributed locally by McGrath Locks in Australia. Australian-based support staff handle warranty claims, app troubleshooting and platform queries - you are not dealing with an overseas vendor. The underlying cloud infrastructure is provided by TTLock, a globally deployed IoT platform.
McGrath smart locks are backed by long-established industry partners and supported locally. To learn more, read Why Terry's Locksmiths, LSC & McGrath Locks Give Long-Term Confidence - in particular why longevity matters more than features and warranty as a confidence signal.
McGrath A236 Slimline Digital Smart Lock - FAQ, Setup and Owner's Guide
Everything below is here to help you choose, fit, set up and live with a McGrath A236. For general smart-lock questions see the Smart Lock FAQ (Chapter 13); for the platform itself, the TTLock Platform Guide (Chapter 14); and for measuring and fitting, Measuring Your Door (Chapter 02).
Fit, Doors and Mortice
The lock body is 36mm wide, so it sits comfortably on aluminium stiles from about 50mm up. Under 50mm, look at the 31mm McGrath A231; 70mm and wider, and any standard smart lock is in play, including the 43mm A210. Chapter 02 sets out the stile width bands, and the whole narrow-frame category is in one place if you want to compare.
McGrath rates the A236 for doors 38mm to 55mm thick. Thinner than 38mm and the spindle and fixings do not seat correctly; thicker than 55mm needs a longer spindle that is not part of the standard kit - ask us before ordering. McGrath's current sheet names timber and aluminium doors. A hollow-core internal door can be fitted in principle, but a Euro mortice needs solid material around the case - check what you actually have against the door thickness guide and the compatibility matrix.
The 85 Series is McGrath's family of Euro profile swing mortices with 85mm between the handle spindle and the cylinder - the "pitch" or "centres". The A236 body is drilled for that 85mm pitch, so any 85 Series body fits it, whatever the backset. Backset (edge of door to spindle centre) is then chosen to match your door: 35mm is supplied, and 28, 30, 45, 50, 60 and 70mm are stocked. All share a 240mm x 22mm faceplate, a 1.5mm SS304 case, SS304 latch and deadbolt, an 8mm spindle and a 500,000-cycle rating. The Euro 85 Series specification sheet (PDF) has every drawing; what backset is and mortice versus bored prep fill in the background.
Both. The 85 Series mortice has a spring latch that dead-latches when the door closes (the latch cannot be pushed back with a card once the auxiliary bolt is depressed) and a separate SS304 deadbolt. Lift the lever upwards to throw the deadbolt manually for the night; a valid credential retracts it. Mortice deadbolts versus mortice latches in Chapter 01, and swing bolt throw on smart lock mortices if you want the security detail.
No handing selection is needed at checkout. The 85 Series mortice has a reversible latch, so the same body serves a left- or right-hand door, and the lever assemblies are set to suit the door at installation. Work out your door first with how to determine handing so the installer arrives knowing, and read field-reversible versus fixed to see why this matters more on some other brands.
The A236 is sold and fitted as a hinged-door lock. McGrath lists the body as compatible with its Euro Hook Mortice (a hook bolt that pulls into the frame instead of a straight latch), so a sliding configuration is possible, but the purpose-built A231 with Hook Bolt is what we recommend for sliders and bifolds - it is what the installers have fitted most often. Send a photo through the recommendation form before ordering a hook body for an A236.
Gate: no. The IP65 rating covers the outside unit only; the inside unit with the battery compartment is not sealed and on a gate it faces the weather. Use the exposed-gate range instead. Fire door: no - the A236 carries no fire test. McGrath's fire-rated smart locks are the Windsor, Stafford, Hamilton and Bardon; Chapter 05 explains why the certification is a system, not a lock. Security screen door: the A236 is not a screen-door lock - the McGrath Ultra-Secua is - but if a screen door sits in front of the A236's door, check the clearance between the two so the lever and body do not foul the screen.
No - it has a standard lever, not an AS 1428.1 accessible lever, and McGrath does not claim DDA compliance for it. For accessible housing the McGrath Albion, Hamilton and Stafford carry DDA-compliant levers, and Chapter 09 and platforms for NDIS housing cover the rest of the brief. Where the fingerprint reader itself is the accessibility win - no key, no code to remember - the A236 can still be the right lock on a non-compliant-lever door; ask us.
Access and Credentials
Up to 250 codes of 4 to 9 digits (4-digit codes only when set from the app). TTLock gives you six passcode types - permanent, time-limited, one-time, cyclic (say, a cleaner every Tuesday), customised, and the erase code that wipes every other code at once. The six passcode types explains each, the manual walks through creating them from page 24, and the 24-hour activation rule is the one thing that catches new owners out.
You can type random digits before and after your real code and the lock still opens, as long as the correct sequence appears somewhere in the string. Someone watching over your shoulder sees a long random number, not your PIN. It works on every code type and needs no setting up. If security is the concern, also look at two-factor unlocking, which requires two credentials in sequence.
The reader stores up to 100 fingerprints and reads in about 1.5 seconds. Reliability is almost entirely down to enrolment: register each finger from three slightly different angles, enrol two fingers per person, and keep the sensor clean. Wet, very dry or heavily worn fingertips are the usual misreads - fingerprint failure modes and the three-angle enrolment technique cover it, and the app procedure is on manual page 34. Give tradespeople a PIN or an RFID fob rather than a fingerprint.
The A236 reads 13.56MHz MIFARE credentials and stores up to 1,000 of them. Two McGrath tags are in the box; extras are the card, fob, wristband and sticker. Many existing building fobs are also MIFARE and will enrol, but 125kHz proximity fobs will not - the reader simply ignores them. Cards can be issued with time limits and revoked one at a time from the app (manual page 32), which is why RFID suits strata and staff. Browse all RFID credentials we stock.
An eKey is a digital key sent to another person's McGrath Locks App - permanent, time-limited or one-time - and the A236 supports an unlimited number of them. Bluetooth 5.0 range is roughly 10 metres in the open and less through walls, so the phone needs to be at the door; the app's touch-to-unlock feature can open the door as you approach (when to disable it). eKeys explained and manual page 19. Note that eKeys can be sent remotely without a gateway - the recipient's phone does the Bluetooth part when they arrive.
Yes. The override is a standard Euro profile cylinder. Spare keys are cut from the A236 key blank (the profile is specific to the A236 and A210, not the A231 or NX range). For several doors on one key, fit the keyed-alike cylinder to each lock; to change the key after a tenant leaves, the keyed-to-differ cylinder swaps in a few minutes. Every option is in cylinders and barrels and keys and key blanks.
Passage mode leaves the door unlocked so anyone can walk through - a shop during trading hours, a church hall on a Sunday, a party at home. You switch it on and off from the app, and the door goes back to normal secure operation the moment you turn it off. It is deliberate, not automatic, so it is easy to forget: build the habit of checking the app's lock state before you leave. Related reading on the mech-digi side: passage versus holdback.
Remote Access, Gateway and Short-Stay Use
For a house on a normal NBN connection, the G5 - its dual-band radio avoids the 2.4GHz-only dropouts that plague mesh routers. For a holiday house or anywhere the internet is flaky, the G4 with a 4G SIM. For an office with structured cabling, the G3 on PoE. One gateway serves several locks within about 10 metres. Choosing the right gateway, the four generations compared, and power them from the McGrath 240V wall adaptor.
Almost never. The two usual causes are a combined 2.4GHz / 5GHz Wi-Fi network that keeps pushing a 2.4GHz-only gateway onto the wrong band (band steering), and a gateway placed too far from the lock or behind a brick wall (where to position the gateway). Why power cycling works tells you which one you have, and the two fixes are a split SSID or a G5 upgrade. Q11 in the Smart Lock FAQ is the short version.
Yes, with one honest caveat. Without a gateway you can still send guests time-limited codes and eKeys from anywhere - the code is generated in the app and typed at the keypad, no internet at the property needed (TTLock without Wi-Fi). Add a gateway and the platform connects to property-management systems for fully automated check-in codes and live audit trails - the PMS platforms that integrate, Chapter 07 on PMS, and scaling across properties. The caveat: if you want codes that work with no gateway and no phone visit at all, Igloohome's algoPIN approach is the alternative - TTLock versus Igloohome is the fair comparison.
Yes. Every unlock is recorded against the credential that opened it - which PIN, which fingerprint, which card, which eKey - with a time stamp. Without a gateway the records download to your phone the next time you connect over Bluetooth; with a gateway they sync to the cloud as they happen and you can read them from anywhere. For a rental this is the audit trail that settles disputes; for a small business, TTLock's attendance management turns the same records into staff timesheets.
Power and Batteries
The 36mm body only has room for AAA cells, which is why McGrath rates the A236 at 12 months where the A210 and A231 - also AAA - are rated at 18. Use good-quality alkaline AAAs (Terry's recommends Duracell) and replace all four together. Rechargeable NiMH cells sit at a lower voltage and will trip the 4.8V low-battery warning early; lithium AAAs are not what McGrath specifies. Battery life - the truth explains what shortens it, and the power and battery FAQs cover the general questions.
Three things, in order. First, door alignment: if the latch has to be forced into the strike the motor works far harder every cycle - door alignment is the most underestimated factor and Chapter 12 explains the motor strain. Second, the battery brand and whether the cells were fresh. Third, the number of daily operations - a busy office door can see 50 or more a day against the 10-a-day rating. If all three check out, get in touch; a firmware update through the app sometimes resolves unusual drain.
The Euro cylinder sits in the mortice below the lever, so the keyhole is on the door face below the exterior handle - not on the keypad panel. Keep one key outside the house: in the car, at a neighbour's, or in a key safe such as the McGrath TTLock key safe, which lives in the same app. A key inside a locked house is no use to anyone - storing the override key and key hiders make the case.
Installation, Setup and Troubleshooting
On a door that already has a Euro mortice prep of the right backset, a handy owner can. On a fresh aluminium door the mortice pocket has to be cut into a narrow stile, the cylinder hole drilled at exactly 85mm from the spindle, and the strike let into the frame - that is locksmith work, and getting it a few millimetres wrong is what produces a lock that will not throw. Chapter 12's DIY-or-locksmith table is honest about where the line is; Terry's free site survey and advice and installation service cover the Gold Coast.
Fit the four AAA batteries, open the McGrath Locks App, and add the lock over Bluetooth while standing next to it (manual page 15). Until an administrator is set the lock stays in its factory always-open state - which is normal, not a fault. Then enrol fingerprints, cards and PINs from the app. Set up through the app first rather than at the keypad; app-first setup is the path McGrath supports and it keeps every later feature available. What TTLock is and the full manual are the two references to have open.
Two likely causes. If it is a new permanent code, it lapsed because it was not used within 24 hours of creation (how to stop codes expiring). If it is a time-limited or cyclic code on a lock with no gateway, the lock's clock has drifted - the symptoms that point to clock drift and clock calibration fix it in the app. If every code fails at once, someone has used the erase code: recovering after an erase code.
Almost certainly not. The TTLock app carries a legacy alert toggle that McGrath hardware, including the A236, does not physically support, and when it is switched on it produces phantom notifications from ordinary door use. Leave the toggle off: how to turn it off in three steps, the background in why you are getting phantom alerts, and Q9 in the Smart Lock FAQ.
TTLock has had published vulnerabilities in the past, all disclosed and addressed at the platform level; Chapter 14 carries the full CVE disclosure rather than glossing over it, and Chapter 15 compares security across platforms. Australia's smart-device security rules took effect in 2026 (what the law requires); we do not currently hold a per-model statement of compliance for the A236 on file - ask us for the latest position before specifying it on a project that requires one, and read what to ask for.
Choosing Between Models
By stile width first, then handle. Under 50mm: A231 (31mm, lever or hex handle, and the only one with a sliding-door version). 50 to 70mm: A236 (36mm, lever) is the safe middle choice. 70mm and up, or where you want a keypad on both sides of the door: A210 (43mm) or the A210 Double-Sided. All three share the 85 Series mortice, AAA power, 100 fingerprints and the same app; battery life is 12 months on the A236 against 18 on the other two. The comparison table on this page and the A231's table set them side by side.
Cheaper on the same platform: the Vault Phantom, a slimline lever-or-knob TTLock lock in black or gold. Higher specification: the Schlage Omnia, a mortice lever smart lock that is fire tested to AS 1905.1 and carries an AS 1428.1 DDA leverset - it is a different class of product on a different app. Within McGrath, a standard timber door with a wider stile opens up the NX5 (the same 85 Series mortice option in a 65mm body) and the NX1. Five questions that decide it if you are still weighing platforms.
Yes - a mechanical digital lock. Borg's BL2702SCECP pairs a knob keypad with a 28mm narrow-stile latch, key override and on-door code change, and the BL2002SC is the simpler bench-coded version. You give up fingerprints, the app, the activity log and per-person codes - everyone shares one code - but there are no batteries and nothing to pair. Mechanical versus smart - which do you need is the fork in the road, and gates - where mech-digi dominates explains why the battery-free option wins outdoors.
The lock is tested to 100,000 cycles and the mortice to 500,000 - at ten uses a day that is decades of latch life; realistically the electronics, batteries and finish set the horizon, and a realistic lifespan expectation is 7 to 10 years for a well-installed, sheltered lock. Installation quality and direct sun matter most. On app longevity, the McGrath Locks App is a branded build of TTLock, one of the largest lock platforms in the world, and McGrath is distributed by LSC, a century-old Australian security wholesaler - what happens if the manufacturer discontinues the app and globally proven, locally branded cover both halves. The mechanical key works regardless of any of it.
Related Products, Guides and Chapters
McGrath slimline family: A210 (43mm) · A210 Double-Sided · A231 (31mm) · A231 with Hook Bolt · all narrow-frame smart locks
Wider McGrath range: NX5 · NX1 · NX6 · Albion (DDA) · Windsor (fire rated) · Stafford (fire + DDA) · Hamilton (fire + DDA) · X3 deadbolt · Ultra-Secua screen door lock · every McGrath product
Mortices, cylinders and credentials: 85 Series 28-50mm · 60mm · 70mm · 28mm hook · 35mm hook · keyed-alike cylinder · keyed-to-differ cylinder · key blank · RFID card · fob · wristband · sticker · mortice locks category
Gateways and power: G5 · G4 · G3 · 240V wall adaptor · TTLock key safe · all gateways
Buyer's Guide chapters: Ch 01 What Is a Smart Lock · Ch 02 Measuring Your Door · Ch 03 Access Methods · Ch 04 Door Types · Ch 05 Fire Doors · Ch 07 Airbnb · Ch 08 Gateways · Ch 09 DDA and NDIS · Ch 10 Brand Profiles · Ch 11 Standards and IP Ratings · Ch 12 Installation · Ch 13 FAQ · Ch 14 TTLock Platform · Ch 15 App Platforms · Ch 16 Mechanical Digital
Helpful blog reading: TTLock Tips and Tricks · TTLock App User Manual · TTLock vs Tuya · Which Platform Is Right for You · Measuring Your Lock Backset · Mechanical Key Override · Realities of Electronic Locks · How Long Do Digital Locks Last · G2-G5 Gateways Compared · Why Smart Locks Drop Off Wi-Fi · Using TTLock for Airbnb · Smart Lock Not Locking · Understanding Door Handing · Terry's, LSC and McGrath · Site Survey and Installation
What's in the Box - McGrath A236 Slimline Digital Smart Lock
- Exterior lock assembly with touch keypad, RFID reader and fingerprint reader x1
- Interior lock assembly with AAA battery compartment x1
- McGrath 85 Series Euro mortice lock - 35mm backset, 85mm centres, part ML-SP-M-35/85-SWING x1 (specification sheet, PDF)
- Strike plate x1
- Euro profile cylinder with 2 x mechanical keys
- 2 x McGrath MIFARE RFID access tags
- Mounting screws and fixings
- Drill positioning template
- Installation guide
- Mini security screwdriver
McGrath A236 Slimline Digital Smart Lock - Real Installations
Real A236 installations across the Gold Coast, mostly on narrow-stile aluminium-framed glass doors - the door type the 36mm body was built for. Fitting one yourself? Read when DIY is appropriate, or book a free site survey.
Silver (9 installations)









Matt Black (12 installations)












McGrath A236 Slimline Digital Smart Lock - Dimensions
PDF Files - McGrath A236 Slimline Digital Smart Lock (STK MLA236)
McGrath's current two-page specification sheet: cover with both finishes, then the full technical table - 38-55mm door thickness, 320 x 36 x 24.3mm case, 58.5mm handle projection, credential capacities, power figures, operating environment and the 12-month warranty. The spec table is on page 2.
McGrath's earlier one-page marketing sheet: unlock-method icons, product overview and an ML-A236 data list. Superseded on specifications by the Technical Specifications sheet above; useful for its passage-mode and mortice-compatibility notes.
The McGrath 85 Series swing mortice family supplied with the A236: SS304 construction, 500,000-cycle rating, BHMA Level 2 and 3, part numbers and dimension drawings for every backset from 28mm to 70mm. Read with how to measure your backset.
The 56-page platform manual behind the McGrath Locks App - registration, adding a lock (page 15), passcode types (page 24), IC cards (page 32), fingerprints (page 34), transferring a lock (page 48) and gateways (page 52). Generic TTLock edition; the McGrath app shares the same menus. Also hosted on our TTLock App User Manual page.
McGrath Locks Warranty
Warranty Summary
How to Make a Claim
- Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries (the place of purchase) within the applicable warranty period.
- Supply your proof of original purchase - a receipt or tax invoice is required.
- Provide a clear description of the fault and your contact details.
- You may be asked to return the product for assessment before a remedy is determined.
- McGrath Locks will, at their discretion, repair the product, replace it with the same or an equivalent model, or provide a refund of the purchase price.
Exclusions
This warranty does not cover:
- Normal wear and tear
- Products that have been disassembled
- Damage caused by improper handling, incorrect installation, misuse, abuse, neglect, modification, or accident
- Installation by unlicensed persons (including non-licensed locksmiths or technicians)
- Products not used in accordance with the supplied instructions
- Cosmetic damage that does not affect functionality
- Labour or installation costs related to the removal or reinstallation of products
- Exposure to conditions outside normal environmental use
- Work completed before warranty approval
- Damage caused by battery leakage, battery failure, or force majeure
Our goods 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. This warranty is provided in addition to your rights and remedies under the Australian Consumer Law.
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.
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3. You get a recommendation
A personalised recommendation tailored to your door, budget and needs. No pressure, no upsell.
Also useful while you are deciding: