Edwards Signaling 270A-SPO Pull Station It includes two individual relay

It includes two individual relay control modules and two Class B monitor modules

Upon command from the loop controller

The choice of either single mode or multi mode fiber links is one of cost vs the distances between nodes

square or a single gang electrical box

Edwards Signaling 270A-SPO Pull Station It includes two individual relayEdwards 270 SPO Series non coded single action fire alarm stations are sturdy, attractive, as well as designed for economical installation. Also, the station provides a single action, break glass, initiating operation. Additionally, available with normally open (N. O.), normally closed (N. C.), or combination N. O. N. C. contacts. The Edwards 270 SPO has screw terminals for field connection. Besides, the 270A Series Manual Stations have 6 inches