Lockwood Selector® 3782 Short Backset DX Digital Mortice Locks

3782 DX Digital Mortice Lock 23mm Backset - Stainless Steel
3782 DX Digital Mortice Lock 23mm Backset - Stainless Steel
3782 DX Digital Mortice Lock 23mm Backset - Stainless Steel
3782 DX Digital Mortice Lock 23mm Backset - Stainless Steel

Combination of 3782 Series Cylinder Mortice Lock, Lockwood 4800 or 5800 Series and Digital Access Pad to provide keyless entry.

For extra security when under forced attack, the inbuilt clutching mechanism allows the outside turnknob to rotate without operating or damaging the lock.

The factory set 4 digit code is easily changed to any 4, 5 or 6 digit code using the code changing kit provided with each lock.

As the digital lockset utilizes mechanical operation, electrical wiring is not required.

Outside Function

Press the C button, enter the correct code, then turn the turnknob to unlock the door. Upon releasing the turnknob the code is automatically cancelled.

Inside Function

By lever handle at all times.

Holdback Function

A key operated holdback function is available, this requires the inclusion of an internal cylinder.



Compatible with Lockwood 4800 and 5800 Series Furniture

Lockwood Plate Door Handles – More information

Case and Faceplates

  • High purity zinc alloy material cases with stainless steel chassis plates. Stainless steel faceplates provided as standard
  • Brass faceplates available for alternative finishes


  • 23mm standard backset
  • Extended backsets 25.4mm, 30mm and 127mm are available
  • Installation of 23mm, 25.4mm or 30mm backset locks on open-in doors would require the door stop to be machined to clear the digital codepad
  • 38mm backset locks are therefore recommended on open-in doors

Latch Bolts

  • Latch bolts are made with stainless steel, 15mm in size
  • Deadlatching is achieved by an auxiliary stainless steel latch bolt
  • Reversible for both left and right hand doors, opening in or opening out whilst lock is in door
  • Electric Strike compatibility
  • Separate auxiliary bolt moves into lock case simultaneously with latch bolt
  • Radius bolt provides greater deadlatch throw and smoother closing action

Cylinder Retaining Pin

Hard-drawn spring steel wire, corrosion protected.

Door Thickness

  • Metal doors: 35 to 50mm
  • Suits hollow-style aluminium door sections with 38mm minimum internal depth
  • Timber doors: 32 to 50mm
  • Specify Selector® 3782-TFKIT for timber door fixing kit to convert an aluminium fix lock to timber door fixing. The timber door fixing kit includes a long faceplate, strike and screws to suit a timber door and jamb

Door Clearance

To ensure correct functioning of the deadlatching mechanism and security for all locks, the clearance between the door and the frame should be 3mm. The deadlatching will operate up to 8mm door clearance, however door clearances over 5mm are not recommended.


All Selector® 3780 Series Cylinder Mortice Locks conform with Level S7 (Physical Security) Australian Lock Standard (AS-4145.2-2008). Conforms to Level S8 (Physical Security) when fitted with door furniture and anti-drill cylinder.


All Selector® 3780 Series Cylinder Mortice Locks conform with Level D8 (Durability) Australian Lock Standard (AS4145.2-2008).


All Selector® 3780 Series Cylinder Mortice Locks conform with Level C6 (168 hours) Australian Standard (AS4145.2-2008).


Requires standard Lockwood oval shaped brass cylinders and brass barrels. Lockwood cylinders include bump resistant five pin tumbler mechanism.

Functions require the use of different cams and adaptors.


Restricted Special Keying

Lockwood locks can be keyed to a number of controlled and/or specially keyed systems. These range from legally protected keys to protect against unauthorised duplication and can also include specially designed keying systems such as master key systems. This allows for different levels of mechanical access control.

Lockwood Keying Platforms – More information

Standard Finishes

Codepad Satin Chrome Brushed (SC)
Mortice Lock Stainless Steel (SS)


Codepad Assembly

High purity zinc alloy. 45mm wide, 164mm high, 52mm projection.

Extended Cylinders

Modular Cylinder Extensions are available for thicker doors.


Rebate kits to suit 13mm standard rebate are available. Only suitable for use with 30mm and 38mm backset locks.

Electric Strikes

Lockwood offers a wide range of electric strikes which are compatible with the Selector® 3780 Series Mortice Lock.

Lockwood Electric Strikes – More information



Part Number 3782DX 4782DX 5782DX 6782DX
Dimension X 23 25.4 30 38



Part Numbers

Lockwood Selector 3782 Short Backset DX Digital Mortice Locks


Primary Locks

Description Part Number
3782 Universal Primary Lock 23mm Backset 3782SS
4782 Universal Primary Lock 25.4mm Backset 4782SS
5782 Universal Primary Lock 30mm Backset 5782SS
6782 Universal Primary Lock 38mm Backset 6782SS


Conversion Kits

Description Part Number
Kit For Standard 3782 DX Digital Configuration 3782-DXKITSC

Where to buy?

Find your local Lockwood stockist.