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)

3D-model of the Promix-SM420.STEP (download)

3D-model of the Promix-SM420 with door position sensor.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
Promix sm213 street variant
Promix sm112 for retail space furniture
New patent has been obtained!


We got another patent for electromechanical lock with flexible steel deadbolt Promix-SM325.


This lock is used to secure electric scooters operating in Kicksharing (rental)

New Official Distributor in UK!!!


We are thrilled to introduce our new Official Distributor in United Kingdom - Electric Locking Systems LTD!!!
Happy to be presented on the UK market and bring Promix products to british customers.


New patent has been obtained!


Happy to announce that our company got approval of the new patent for electromechanical locking of the battery compartment of electric scooter.
All news
© Promix, 2007 - 2023
35 Litera A, Krasninskoe shosse, Smolensk, Russia
location map
skype: itcpromix


WebCanape - develop sites and marketing