Electromechanical lock

Electromechanical rim lock with emergency opening

Promix-SM420 - photo - 6


The lock is designed to restrict access to retail area furniture:

- showcases made of chipboard or aluminum profile;

- chipboard cabinets and drawers;

- refrigerator cabinets with swing door

.... and other similar equipment.

The lock is opened when the supply voltage is applied using a  remote access controller or a button (switch).

The function of emergency manual opening of the lock is provided.

Technical characteristics

Deadbolt holding force, kg, at least 150

DC supply voltage, V: 10-14

Input current (at 12V), A: 0.15

Lock weight, kg, maximum: 0.08

Length of power cable, m: 0.1


Promix-SM420 EN Operating Manual (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
Promix sm213 street variant
Promix sm112 for retail space furniture


The quality management system applied to design and development, production and delivery of electromechanical locks, control and management devices complies with the requirements of ISO 9001:2015.



We are pleased to announce that our company has received a new patent for the method of blocking switching of electrical installations and the device for its implementation. 



We celebrate 16 years since the foundation of our company!


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© Promix, 2007 - 2021
35 Litera A, Krasninskoe shosse, Smolensk, Russia
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