Electric drop bolt lock for frameless glass door SL- E153SLD is a narrow panel electric bolt lock used for up and down frameless glass door in door access control systems.
It is specifically used where Electromagnetic Locks cannot be applied, for example, the or sliding doors or 180 degrees swing through. These locks can be either fail-safe (unlocked when power is switched off) or fail secure (remain locked even when power is switched off), depending on the type of building they are to be used on.