System Sensor 5151 Rate-Of-Rise Heat Detector (Without base)

SYSTEM SENSOR 2451TH PHOTOELECTRIC SMOKE/ HEAT DETECTOR WITH BASE

System Sensor 5251B Heat Detector

System Sensor 5151 Rate-Of-Rise Heat Detector

System Sensor 5251RB Heat Detector With Base

System Sensor 2100TD Smoke/Heat Detector With Maintenance Feature

Heat Detector Head, Addressable, 135 Degrees Fixed, System Sensor Model #5251B

System Sensor SS-HEAT. 135°F fixed heat detector