Electromechanical lock for retail space furniture

Mini lock designed to restrict access to various retail space furniture: showcases made of chipboard and aluminum profile with one or two swing glass doors, cabinets and drawers of counters.



Promix-SM112 - photo - 35
Promix-SM112 - photo - 35 Promix-SM112 - photo - 34 Promix-SM112 - photo - 33 Promix-SM112 - photo - 32 Promix-SM112 - photo - 31 Promix-SM112 - photo - 30 Promix-SM112 - photo - 29 Promix-SM112 - photo - 28 Promix-SM112 - photo - 27 Promix-SM112 - photo - 26 Promix-SM112 - photo - 25 Promix-SM112 - photo - 24 Promix-SM112 - photo - 23 Promix-SM112 - photo - 22 Promix-SM112 - photo - 21
Power supply voltage: 12V
Holding force: not less than 150 kg
Normally closed (NC) version - closed without supply voltage
Electric current consumption: less than 100mA
Built-in door pusher: pushes the door when the lock is opened

Mini lock designed to restrict access to various retail space furniture: showcases made of chipboard and aluminum profile with one or two swing glass doors, cabinets and drawers of counters.




“Promix-SM112” is the new name of Sheriff-2M Electromechanical lock.

Miniature size and design features allow to use the lock to restrict access to various retail area furniture:

  • chipboard showcases with one or two swing glass doors;
  • aluminum profile showcases with one or two swing glass doors;
  • chipboard cabinets and drawers of counters.

The lock is available in normally closed variant - the lock is closed if the supply voltage is removed. The lock can be opened by applying the supply voltage with the help of controllers of access control system, audio and video intercoms, keypads, conventional buttons or switches.


Lock connection options 

(power voltage can be applied to the lock by a switch, intercom, controller, etc.)


Installation and principle of operation

The lock is mounted on a fixed surface. The counterpart (deadbolt) is installed on the door. If there are two doors, the second door is locked with a strike plate.

«ШЕРИФ-2М» Фото установки замка на стекло «ШЕРИФ-2М» Фото установки замка на двери из ЛДСП

Mounting the deadbolt on glass doors Mounting the deadbolt on chipboard doors

When the voltage is applied, the lock is unlocked, but the door remains closed. To open the unlocked door, you need to push on it, the lock will push the door with the built-in pusher and slightly open it. If the door is not pushed, then, after removing the supply voltage, the lock will be blocked and the door will remain locked. This allows to use one ACS controller to control a group of locks located on adjacent showcases at once.


For example, a store has several locks on showcases connected to Promix-RDS.01 Remote Control System The lock unlocking time of controller is set to 1 second. The seller comes to the chosen showcase, presses the button on the key fob, all locks are transferred into the unlocked state for 1 second. During this time, the seller presses the door to be opened, the lock pushes and opens the door. The rest of the locks are transferred into the blocked state and lock the showcases.


  • One lock closes two doors;
  • Can be installed on right and left doors;
  • The lock and the pusher can be swapped;
  • Installation of door handle is unnecessary;
  • Can be installed on various types and kinds of retail equipment;
  • Unique balance between the dimensions, holding force and input current;
  • To ensure the normal operation of the lock in case of misalignment of the deadbolt and lock (for example, inaccurate installation or sagging of the door during operation), the deadbolt is made movable;
  • Does not require maintenance and lubrication for the entire period of operation.

Package contents

  • Electromechanical lock with pusher — 1 PC.
  • Deadlock with adjustment plate - 1 PC.
  • Bracket for mounting on glass, thickness: 4-8 mm — 1 PC.
  • Strike plate for chipboard — 1 PC.
  • Adjusting shim — 2 PCs.
  • Screw 3x4 — 2 PCs.
  • Wood screw 4x30 — 2 PCs.
  • Wood screw 3.5x15 — 3 PCs.


The modifications of locks available for order are shown in the table (see colors above):

Lock model   Description

Normally closed (opens when supply voltage is applied),

supply voltage 12V

Technical characteristics

  • Holding force: at least 150 kg
  • DC supply voltage: 10-14V
  • Input current (at 12V) — 0.1А
  • Length of power cable — 0.1m
  • Lock weight: maximum 0.15 kg



Operating manual «Promix-SM112» EN (download)

3D-model of the Promix-SM112.STEP (download)

We will be glad to see you as a client of Promix Engineering and Production Center
You can see the full range of Promix equipment and locks in our catalog
If you have any questions, you can contact a Promix manager by + 7 (4812) 619-330
You can also leave a request using the feedback form
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