Hello there,
I recently installed a door entry system in a store in a shopping center. Easy job, mag lock, key pad etc.
However, the door needs to release when the fire alarm goes off. Normally I'd just wire into the NC/C relay on the fire panel then to mag lock etc. However the relay is already used in monitering the fire alarm at the main security office via the common/normally open connections.
I'm struggling to get the right solution to open the door when the alarm goes off.
I 've thought of the following possible solution: the NC connection will always be live with 24v from the common (from security office panel), so I take a wire from NC and have that as the trigger on a relay which either goes to the Mag lock @ 12v or the 240v power supply to the whole door entry system.
Any ideas on a relay that would do the job, or another solution
Thanks
I recently installed a door entry system in a store in a shopping center. Easy job, mag lock, key pad etc.
However, the door needs to release when the fire alarm goes off. Normally I'd just wire into the NC/C relay on the fire panel then to mag lock etc. However the relay is already used in monitering the fire alarm at the main security office via the common/normally open connections.
I'm struggling to get the right solution to open the door when the alarm goes off.
I 've thought of the following possible solution: the NC connection will always be live with 24v from the common (from security office panel), so I take a wire from NC and have that as the trigger on a relay which either goes to the Mag lock @ 12v or the 240v power supply to the whole door entry system.
Any ideas on a relay that would do the job, or another solution
Thanks