The STI6400/RS remote sounder is an accessory for the STI 6400 Single Door and STI 6402 Double Door Exit Stopper Door Alarms, raising an alarm if a prohibited door is opened by an unauthorised person. The sounder can be controlled by the main Exit Stopper and that unit's key.
Durable, virtually indestructible casing
Lifetime casing guarantee
Individual power supply (9V battery included)
Alerts unauthorised use of fire exits in remote locations