Lockwood 3772-DXKOKITSC Key Override DX Digital Conversion Kit for Selector 3772 Mortice Locks
At A GlanceLockwood 3772-DXKOKITSC at a glance
DISPATCHUsually ships in 3 business days
PIN Code 
Key OverrideThe Lockwood 3772-DXKOKITSC is a mechanical Digital DX conversion kit with key override, made for the Lockwood Selector 3772 MkII mortice lock platform. Fitted to a compatible Selector primary lock, it turns a standard keyed commercial mortice lock into a battery-free keypad entrance: staff enter a code on the outside keypad and turn the knob, while keyholders such as managers, maintenance staff and the fire brigade retain keyed access through a lower override cylinder.
It is important to understand what you are buying: this is a conversion kit, not a complete lockset. The primary Selector 3772 series mortice lock, the 570E type override cylinder and the Lockwood 1800 or 2800 series door furniture are all separate items, ordered to suit the door and the keying system on site. The sections below spell out exactly what is in the kit, which primary locks it suits, and what else your order needs.
The key override format is the one to choose where a shared keypad code is the everyday credential but keyed entry must be retained - a very common requirement on commercial back-of-house doors, plant rooms and fire-serviced buildings. If keyed access is not required, the 3772-DXKITSC standard DX kit converts the same locks without the override cylinder provision.
View the full range of battery-free mechanical keypad locks here: Digital Mechanical Locks Collection
New to the category? Start with our pillar guide, What Is a Mechanical Digital Lock?
This kit does not include the primary Selector 3772 series mortice lock, the 570E type key override cylinder, or Lockwood 1800 / 2800 series door furniture. All three must be ordered separately to complete the door - see which primary locks this kit suits and the Not Included list below. Not sure what your door needs? Contact Us before ordering.
The Selector 3772 MkII is one of Australia's workhorse commercial mortice lock platforms, and this kit inherits that duty rating. For the wider commercial picture - cycle ratings, exit paths and fire certification - see our guide to Heavy Duty Commercial Mechanical Digital Locks.
Usually ships in 3 business days
Key Features
- Battery-free mechanical keypad conversion - no batteries, no electrical wiring, nothing to go flat
- Converts compatible Lockwood Selector 3772 MkII mortice locks to coded keypad entry
- Key override provision retains keyed access for authorised keyholders when a 570E type lower cylinder is fitted
- Factory-set 4 digit code, changeable to any 4, 5 or 6 digit code using the supplied code change kit
- Outside operation: press the C button, enter the code, turn the knob
- The code cancels automatically when the outside knob is released - it is never left "unlocked" behind you
- Inside operation stays on the lever handle at all times for free egress
- Clutching knob mechanism protects the keypad assembly during forced attack
- One kit suits the whole standard-backset family - 60mm (3772), 89mm (4772) and 127mm (5772) Selector locks
Need a Complete Internal/External Package?If you want a single box that includes both the Digital DX keypad for the outside and a matching internal lever or knob - ready to install with nothing else to source - the Lockwood 002DX deadlatch family is the one to look at. It is also a common choice for 
apartment fire doors, where the 002 deadlatch combined with coded entry and free internal exit meets the egress requirements of most tested doorset schedules - always confirm against your building's approved fire door schedule before ordering.
- 002-1LDXSC - Lever inside, door opens inwards
- 002-1KDXSC - Knob inside, door opens inwards
- 002-4LDXSC - Lever inside, door opens outwards
- 002-4KDXSC - Knob inside, door opens outwards
The key choice is which way your door opens (inwards or outwards) and whether you prefer a lever or knob on the inside face. Not sure? Contact Us and we will confirm the right variant for your door.
No electronics, no batteries, no wiring - the code lives in a mechanical tumbler chamber, so the lock keeps working through power failures and never needs a battery change. The trade-off is a single shared code rather than per-person credentials; our pillar guide covers the honest limitations as well as the strengths.
Decoding Lockwood Codes - Locks and Kits
Lockwood's DX codes look cryptic, but they read logically once you know the pattern. Taking this kit's own code, 3772-DXKOKITSC, from left to right:
The same grammar builds the ordering codes for complete key override locks: a full function code such as 3772DXKOVHSS reads as 60mm backset (3), Selector MkII (772), digital keypad (DX), key override (KO), holdback by cylinder function (VH), Stainless Steel (SS). The part-number builder on the ordering page of the Lockwood Mech-Digi catalogue excerpt walks through exactly this decomposition.
Two caveats worth knowing. First, the short backset Selector family counts differently - 3782, 4782, 5782 and 6782 step through 23, 25.4, 30 and 38mm backsets, which is why the 3782-DXKOKITSC short backset kit is a different product for a different door. Second, the 002 and 530 DX families sit outside this numbering entirely - they are named for their parent hardware. The full decoder lives on our 5572DX page.
Compatibility - Which Primary Locks This Kit Suits
The kit converts Lockwood Selector 3772 series primary mortice locks. Lockwood's standard ordering pairing is the 3772SS universal primary lock plus this kit, with the 570E type override cylinder and 1800 or 2800 series furniture completing the door. We stock the Selector 3772 MkII primary lock range:
Two checks before you order. The kit's latching adaptor is generation-matched: the MkI adaptor (3770M1-ADAPTOR) only suits MkI Selector mortice locks and the MkII adaptor (3770M2-ADAPTOR) only suits MkII - mixing generations will not work. And the primary lock's function, cylinder arrangement and furniture all interact, so if you are converting an existing installed lock rather than ordering a new one, Contact Us with the lock's faceplate markings and we will confirm the match before you commit.
Code Control - How the Code Works and How to Change It
The keypad ships with a factory-set 4 digit code, which you can change to any 4, 5 or 6 digit code of your own using the code change kit supplied in the box. The code lives in a mechanical tumbler chamber behind the keypad - there is no memory chip and nothing to reset electronically. Because it is a chamber rather than a sequence, each digit can be used once per code and the digits can be pressed in any order; the C button always clears a wrong entry and cannot be part of the code. Our pillar guide explains how the coding chamber works and why the digits are order-independent.
Changing the code is a bench job, and an honest word: it is a fiddly one - the tumblers are small and the sequence matters - but it is entirely doable with the kit and the instructions in front of you. We have written the whole thing up in plain English - see the Lockwood DX section of our code-changing guide, the shared bench method, and the one rule that saves callouts: test the new code five times before you close the door.
Access Methods
What's in the Box
- Digital codepad (Satin Chrome)
- Mounting plate with lower cylinder hole
- Lower cylinder mounting plate
- Spindle cam
- Codepad spindle
- Latching adaptor
- Associated mounting screws
- Code change kit
The mounting plate with lower cylinder hole, the lower cylinder mounting plate and the spindle cam are the key override parts - they are only supplied in this KO kit, not in the standard 3772-DXKITSC.
Not Included - Must Be Ordered Separately
- Primary Lockwood Selector 3772 series mortice lock - see the compatibility table
- 570E type key override cylinder, keyed to suit your system - the 3777M1-KIT570E lower cylinder mount kit covers dual cylinder mounting arrangements
- Internal cylinder, where the key operated holdback function is required
- Lockwood 1800 or 2800 series door furniture for the inside of the door
- Additional cylinders and keying services
Suitable Uses
- Converting existing Selector 3772 MkII mortice locks to keypad entry without rewiring or replacing the lock case
- Heavy duty commercial doors in offices, institutions, schools, hospitals and hotels
- Back-of-house, plant room and store room doors where one shared staff code is acceptable
- Fire-serviced and master-keyed buildings where keyed access must be retained alongside the code - the reason the KO format exists
- Sites standardised on the Selector platform that want keypad entry on selected doors while keeping the lock schedule consistent
Standalone use - without a compatible Selector 3772 series primary lock there is nothing for the kit to operate. Doors outside the 32-50mm thickness range. Sites that need individual user codes, time-limited codes or an audit trail - that is smart lock territory; start with our Mechanical Digital Locks chapter to see where the line falls.
Available Finish Options
Satin Chrome
(This Product)
STK 3772-DXKOKITSC
The finish code describes the codepad; the Selector primary lock bodies are Stainless Steel. Finish selection does not affect functionality, compliance, or performance.
Item Code Family - Lockwood DX Kits and Mortice Locksets
Conversion kit or complete lockset? If the door already carries a healthy Selector 3772 lock, the kit converts it. If you are starting from bare timber, a complete DX lockset such as the 3572DXKO is usually the simpler order. Contact Us if you are not sure which setup suits your door.
Related Parts and Accessories
Full Specifications
Dimensions
Fire Door Compliance
This kit is not a standalone fire-rated product. It converts a Selector 3770 series mortice lock, so any fire claim belongs to the complete doorset - the door leaf, frame, lock, furniture and every other penetration assessed together.
Lockwood states that Selector 3770 series cylinder mortice locks have been successfully tested on fire door assemblies for up to 4 hours, depending on the doorset type and the full hardware configuration. Two hard rules for DX fire door applications: the rubber mounting pad must not be fitted, and the key operated holdback function must never be activated on a fire door.
Fitting to an apartment fire door? Read our local guides first: Apartment Fire Doors on the Gold Coast - What Locks Are Actually Compliant? and, before anyone drills, Asbestos in Gold Coast Apartment Fire Doors.
Important: Always confirm compliance against the complete tested doorset, the lock schedule, and the door manufacturer's approval. If you are not sure, Contact Us before ordering.
Frequently Asked Questions
No. It is a conversion kit only - the compatible Selector 3772 series primary mortice lock is a separate item. See which primary locks this kit suits.
A 570E type oval cylinder, ordered separately so it can be keyed to your site's system. The kit supplies the mounting plate with lower cylinder hole, the lower cylinder mounting plate and the spindle cam; the 3777M1-KIT570E mount kit covers dual cylinder arrangements.
The latching adaptor is generation-matched: the MkI adaptor (3770M1-ADAPTOR) only suits MkI Selector mortice locks and the MkII adaptor (3770M2-ADAPTOR) only suits MkII. Check the generation of an existing installed lock before ordering - Contact Us with the faceplate markings if you are unsure.
No. The keypad is fully mechanical - the code is held in a tumbler chamber, so there is nothing to power, nothing to go flat and nothing to run cable to. Our pillar guide explains how battery-free keypads work.
Yes, with the separate 3772-AFKIT aluminium door fixing kit. The 3772AFSS primary lock comes with aluminium fixing built in.
Additional Information
Lockwood branded products purchased new in Australia are warranted by ASSA ABLOY Australia against defects in materials and workmanship:
- Mechanical components: 25 years from the date of purchase - and because the DX range is entirely mechanical, this clause covers the whole kit
- Satin Chrome plated finish: 10 years
- Keys: 12 months
Lockwood Mech-Digi Catalogue Excerpt - Selector 3772 MkII Key Override DX section
Lockwood Mech-Digi Catalogue Excerpt - 3770 Series DX Digital Kit contents and drawings
Lockwood Selector 3700 Series Mortice Locks Catalogue
Lockwood 3700 Series Mortice Locks Service Manual
Lockwood Warranty - 25 Year Mechanical
Lockwood 3772-DXKOKITSC - FAQ, Ordering and Owner's Guide
Everything installers, facility managers and specifiers ask about the 3772 key override DX conversion kit, in one place. For the wider battery-free picture, start with Chapter 16 of our Buyer's Guide (Mechanical Digital Locks) and the pillar guide What Is a Mechanical Digital Lock?
Compatibility and Ordering
Four things: this kit, a compatible Selector 3772 series primary mortice lock, a 570E type override cylinder keyed to your system, and Lockwood 1800 or 2800 series furniture for the inside of the door. If the door already carries a healthy Selector 3772 lock, you only need the kit, the cylinder and furniture to suit.
The kit's latching adaptor is generation-matched - the MkI adaptor (3770M1-ADAPTOR) only suits MkI Selector locks and the MkII adaptor (3770M2-ADAPTOR) only suits MkII, so this matters before you order. The faceplate markings and lock case identify the generation; the kit contents page of the Lockwood Mech-Digi catalogue excerpt carries the adaptor warning in full. Send us a photo of the faceplate via Contact Us and we will confirm it for you.
All three standard backsets - the kit converts the 60mm (3772), 89mm (4772) and 127mm (5772) Selector locks, so the backset decision belongs to the primary lock, not the kit. If you are measuring an existing door, our guide to measuring your lock backset shows you how in two minutes. Narrow-stile doors with 23-38mm backsets belong to the short backset x782 platform and its own 3782-DXKOKITSC kit.
Because cylinders are keyed. Supplying a random-keyed cylinder in the box would defeat the point of the KO format on a master-keyed or fire-serviced site - the 570E type cylinder is ordered separately so it can be pinned to your keying system. The 3777M1-KIT570E and 3777-KIT lower cylinder mount kits cover dual cylinder arrangements.
Yes - the platform suits 32-50mm doors, and the 3772SS/50 primary lock comes with the 50mm door kit included for the top of that range. Keep door-to-frame clearance in mind too: 3mm is recommended, and anything over 5mm invites sloppy latching.
Codes and Everyday Use
Press the C button to clear the chamber, enter the code, then turn the knob. When the knob is released the code cancels automatically - the door is never accidentally left in a "code entered" state behind the last person through. Inside, the lever handle always exits freely.
At the bench, with the supplied code change kit, and it is fiddly - the tumblers are small and the sequence matters. Set aside unhurried time, follow the shared bench method and the Lockwood DX procedure, and test the new code five times before the door closes. If that sounds like a job for someone else, a locksmith knocks it over quickly - our qualified locksmith recommendation service can help.
No - a mechanical tumbler chamber holds one code at a time, shared by everyone who uses the door. There is no audit trail, no time-limited codes and no per-person revocation; revoking access means changing the code. If those features matter on your site, you are shopping for a smart lock, not a mechanical keypad - Chapter 16 maps where the line falls.
If the outside knob is forced without a valid code, the clutch lets it rotate without driving the latch - the attack spins uselessly instead of transferring force into the keypad mechanism. It is a durability feature for exactly the high-traffic commercial doors this platform lives on.
Fire Doors and Compliance
The honest answer: fire ratings belong to complete tested doorsets, not individual components. Lockwood states the Selector 3770 series has been successfully tested on fire door assemblies for up to 4 hours depending on the doorset and full hardware configuration, but your specific door leaf, frame and hardware schedule govern the claim. Two hard rules for DX fire door work: no rubber mounting pad, and holdback never activated. Start with our fire door compliance guide.
Yes - fire doors in older Gold Coast buildings can contain asbestos in the core, and a keypad conversion means new fixing holes. Read Asbestos in Gold Coast Apartment Fire Doors before anyone puts a drill to the leaf.
Holdback (the VH configuration) holds the latch retracted by key so the door swings freely - useful for deliveries, cleaning windows or trading hours on a busy door. It needs an internal cylinder in addition to the override cylinder, and it must never be activated on a fire door. Our guide to Passage Mode vs Holdback Mode walks through when it earns its keep.
Buying and Alternatives
If the door already carries a healthy Selector 3772 lock, the kit converts it and keeps your lock schedule intact. Starting from a bare door, a complete DX lockset is usually the simpler order - the 3572DXKO at 60mm backset, or the 5572DX at 127mm where key override is not needed. Our comparison guide Lockwood vs Borg vs Carbine sets the DX range against the other battery-free brands we stock.
Ask who must get in when the code cannot be shared: fire brigade access, master key holders, managers on a keyed system. If any of those apply, KO earns its place. If the code really is the only credential the door needs, the 3772-DXKITSC standard kit is the simpler, cheaper conversion.
Yes - the platform is well supported with spares. The SPDX-324 keypad mounting plate and the SPDX-524 key override mounting plate replace the two plates specific to DX conversions, and strikes, rebate kits and fixing kits are all separately available - see the Related Parts and Accessories table. Spare change keys and tumblers are covered in our code-changing guide's spares section.
ASSA ABLOY Australia's Lockwood warranty: 25 years on mechanical components - which is the whole kit, there being no electronics - 10 years on the Satin Chrome plating, and 12 months on keys. The corrosion exclusion matters on the coast: salt spray and coastal air damage is not covered, so regular maintenance is part of ownership here. The full terms are in the Lockwood warranty document.
What's in the Box
- Digital codepad - the Satin Chrome mechanical keypad, 45mm wide x 164mm high with 40mm operating knob
- Mounting plate with lower cylinder hole - the 51mm x 246mm outer plate that accommodates the override cylinder position (KO kit only)
- Lower cylinder mounting plate - secures the 570E type cylinder behind the outer plate (KO kit only)
- Spindle cam - drives the override function from the cylinder (KO kit only)
- Codepad spindle - the 76mm drive spindle connecting keypad to lock
- Latching adaptor - generation-matched to MkII Selector locks; MkI locks require the MkI adaptor
- Associated mounting screws
- Code change kit - the tumblers and tools for setting your own 4, 5 or 6 digit code at the bench
Not in the box, by design: the primary Selector 3772 mortice lock, the 570E type override cylinder (keyed to suit your system) and the 1800 or 2800 series inside furniture. The kit contents drawing is on the kit page of the Lockwood Mech-Digi catalogue excerpt.
Dimensions
Lockwood DX Mechanical Digital Range - Product Brochure
The complete mechanical digital section of the Lockwood Keyless Entry Catalogue - the 002, 530 and Selector DX families this kit belongs to, plus the accessories, kits and ordering procedure for the range. Prefer it as a file? Download the catalogue excerpt (PDF).
Lockwood Mech-Digi Catalogue Excerpt - Selector 3772 MkII Key Override DX section
Lockwood Mech-Digi Catalogue Excerpt - 3770 Series DX Digital Kit contents and drawings
Lockwood Selector 3700 Series Mortice Locks Catalogue
Lockwood 3700 Series Mortice Locks Service Manual
Lockwood Warranty - 25 Year Mechanical
Lockwood Warranty
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary by product type, with separate cover for mechanical components, electrical and electronic parts, keys, and finishes.
The summary below sets out the standard warranty structure. All warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries. Full terms and exclusions are set out in the official Lockwood warranty document linked at the base of this page.
Warranty Summary
Finish Coverage Guide
- Everbrass finishes: up to 25 years against corrosion, tarnishing and discolouration.
- Stainless steel, polished stainless steel, chrome plating and anodised finishes: typically up to 10 years.
- PVD and VIVID finishes: typically up to 10 years.
- Symmetry range finishes: typically up to 5 years.
- Decorative finishes (Antique Copper, Architectural Bronze, Oil Rubbed Bronze, Aged Brass, Polished Brass, Satin Brass and related variants): typically up to 2 years against corrosion.
- Unlacquered brass finishes naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where the required cleaning and maintenance have not been followed.
How to Make a Claim
- Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries with your proof of original purchase.
- Keep the product securely packed and clearly identified, ready for assessment.
- Where a claim is escalated to the manufacturer, ASSA ABLOY may issue a case number before goods are returned.
- ASSA ABLOY assesses the claim and determines repair, replacement with the same or closest equivalent product, or refund of the purchase price.
Exclusions
- Normal wear and tear.
- Misuse, abuse, accidental damage or use outside published specifications.
- Improper maintenance or failure to follow care instructions.
- Unauthorised modification, repair or use of non-genuine parts.
- Exposure to corrosive environments including coastal air, salt spray, chemicals or pollution.
- Removal, refitment or associated labour charges.
- Products not originally sold in Australia through authorised channels.
These manufacturer warranties apply in addition to your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. Where a failure does not amount to a major failure, you are entitled to have the goods repaired or replaced.
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.
Also useful while you are deciding:
