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System Sensor 2251B Intelligent Photoelectric Smoke Sensors are designed for use with System Sensor intelligent control panels
making both models interchangeable
The FMM-101(A) Mini Monitor Module can be installed in a single-gang junction directly behind the monitored unit
The FCM-1 Addressable Control Module provides Notifier intelligent fire alarm control panels a circuit for Notification Appliances (horns
HONEYWELL TC830E1004 HEAT DETECTOR
Gamewell FCI AOM-2SF Addressable Output Supervised Control Module 5551J System Sensor 2251B Intelligent PhotoelectricThe Gamewell FCI Velociti Series addressable output supervised control module allows an Gamewell FCI analog addressable fire alarm control to switch an external power supply, such as a DC supply or audio amplifier (up to 80 VRMS) to notification appliances.