The M22/B-D5-21-04-P is a two-position toggle switch with a 21 mm actuator and an electro-mechanical lock. It is made from an aluminium and zinc alloy and is manufactured by Roztocze. The switch has two different positions, labelled as "right" and "left". It is suitable for both switching and control applications in a variety of environments. Additionally, it features a locking feature, which allows the switch to be locked in the “on” or “off” position to prevent tampering.