Integrating fire alarm control using direct wiring.
Fire alarm door relay.
Consult the list to find a relay for your specific fire alarm or notification system.
System sensor multi voltage conventional relays are used for high current switching applications such as fan and damper assembly control door control air handling unit controls and other types of building system interfacing.
When a heat sensor smoke detector or some other means detects such a fire the fire alarm must have the capability to disconnect operating power from the lock mechanism thus.
You need to rememebr that if you use the sounder output to activate the relay and unlock the door then when the alarm is silenced by the silence button for any reason before the evacuate is given then the mag lock will lock the door as its a non latched output unlike the fire output relay.
The door access control reader and the electric lock can be wired to the fire alarm in a number of different ways.
To prevent transient voltage spikes from burning out the control relay contacts an auxiliary relay with big contacts should be installed between the fire alarm control relay and the door holders.
The intelligent fire alarm relay can only be used on intelligent fire alarm systems and is made specifically to work with particular brands of fire alarm systems.
This video demonstrates the 24 volt auxilliary fire alarm relay.
A range of easy relay fire alarm relays are available from 12v and 24v dc coils to 230v ac 50 60hz coils.
Wiring them depends on what smoke heat alarms you have in if you have a fire panel unlikely in domestic unless landlord flats then use the open on alarm volts free relays to drop power to magnets if you have mains smoke heat detectors then they need to have an auxillary volts free output so you can use it again to drop power from magnets on alarm.
Our newest addition to our fire alarm relays category is wireless fire alarm relay that allows a network of wireless relays with 4 inputs outputs to be connected.
Schematic diagram showing how to land the wires when using an auxiliary.
On discount fire supplies we have a wide variety of fire alarm relays for sale.
Then the auxiliary relay takes the voltage spike and the fire alarm control relay only has to turn off the auxiliary relay.
We can use a relay to drop power to the electric lock or use an ip device that drops power using the network connection or add a power control box that drops power when the fire.
This unit allows the fire alarm system control unit to provide emergency control of other systems in the building such as air handling systems door control devices smoke control systems or other functions required by the local code and or local authority.
The normally closed portion of a form c relay is used to allow power to pass thus powering the electric locks until a fire is detected by the fire alarm system.
