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Electronic Latch Lock 3792 (5V) 3793 (12V)

Designed and manufactured in the UK, 3792 (5V) and 3793 (12V) e-latches incorporate a range of innovative features. These include both key and mechanical cable overrides, a floating door bolt to accommodate mis-alignment, and a precision motor driven mechanism with excellent operation even under load.

Lock Description

These latches have been designed for easy connection and control and include an internal sensor for feedback on whether the door is closed. They have a push-to-lock action and on opening will push the door slightly ajar. For greater movement a spring-loaded plunger is available as a replacement for the key override barrel.

The latches are supplied with a door mounted striker bolt (customer to specify flush fit or 2mm stand-off) and come with a 2, 4 or 6 metre cable (customer to specify)​.

Rigorously tested for durability and reliability, these latches are ideal for use on a wide variety of applications such as personal lockers, postal and delivery systems, asset management systems and other enclosures.

Looking for a complete system? We can provide you with an entire Connected Locking System including touchscreen interfaces, software, and latches. Visit our website or download our brochure for further information.

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Lock Options
Product Code Body Height Body Width Body Depth Finish Enquire
37928K (5V) 70 80 20 Silver Electrophoretic
37938K (12V) 70 80 20 Silver Electrophoretic
Standard Features
  • Rugged cast alloy construction
  • Compact size (70 high x 80 long x 20 thick)
  • Two, Ø4 attachment holes
  • Plug-in connection
  • Easy connectivity
  • Optional mechanical cable over-ride
  • Mechanical 10-disc key over-ride (1 key per 50 locks)
  • Removable over-ride lock cylinder
  • Ball ended, safe striker
  • Floating striker attachment allows for door misalignment
  • Wide tolerance striker socket
  • On-board intelligence – Easy control options
  • Door closed feedback (When locked)

Technical Data

  • Interface: JST – S6B – PH – SM4 – TB
  • Mechanical lifespan: 60,000 cycles
  • Dimensions: 70 x 80 x 20mm
  • Pull out force: 3000N
  • Maximum load for electronic opening: 150N at 5V and 12V
  • Housing material: Zinc alloy
  • Weight: 350g
  • Operating temperature range: -10 to +50 °C
  • Standby current: 1.4mA
  • Maximum current draw: 300mA

Additional information

Electronic Latch Lock 3792 (5V) 3793 (12V) technical drawing

The latch input and outputs connect directly to an on-board microprocessor (uC). There is one input to specify lock/unlock (2). This is internally pulled up. When it is connected to VCC (1) or left unconnected the latch will be locked. The latch will unlock when lock/unlock (2) is pulled low (connected to ground) for longer than 10ms.

There are three outputs that indicate the status of the latch. The presence of a latch is indicated by a low signal on the latch present output (3).

The locked status (4) indicates whether the latch is in the locked position (high) or not (low). When this output is high the latch internally is in the locked state. If the door is still open, it will be locked shut when it is next closed.

The latched status (5) indicates whether the striker bolt is latched into the lock (high) or not (low). This identifies whether the door is shut and locked or not. If the latch is unlocked (see above), the latched indicator will always be low.

Connection Diagram

Connection Diagram_Cable

Male Connector
 MPN  JST, PHR-6
 Pin  Description
 1  +5V or +12V
 2  In – lock/unlock
 3  Out – latch present (active low)
 4  Out – locked (active high)
 5  Out – latched (active high)
 6  Ground