For 12 V d.c. fail-safe locking only when green breakglass unit is not used due to security risk of regular abuse and/or to comply with Secured by Design.
This is a safety device to guarantee escape in the event of an emergency. Operates in conjunction with a fail-safe relay device (supplied pre-cabled). The double-pole bottom button also activates a latching hold unlocked function.
Installation instructions must be clearly adhered to. Correct installation could be a matter of life and death.
Handsfree options available.