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
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We are on "Wer Liefert Was"


Good news for our German-speaking clients. You can also find us on the leading B2B market place "Wer Liefert Was" as qualified business partner!
New distributor in EU


Great news for our European customers!!! The original electro-mechanical locks "Promix" you can now order directly from the warehouse of our Estonian distributor in Tallinn. Smart Security LLC, +372-66-11-774,
Our company has succesfully registered the business account on EUROPAGES


Dear friends, we are thrilled to announce that our company - Engineering and Production center "PROMIX" has succesfully registered the business account on the leading European e-commerce B2B platform EUROPAGES. Please feel free to visit!
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