System Sensor 4WT-B 4-Wire, Photoelectric i3 Smoke Detector With A 135 Degree Fixed Thermal Sensor

System Sensor 5603 Heat Detector, 135F Fixed Temp, Single-Circuit

System Sensor Heat Detector 5600 Series

System Sensor 5601P Heat Detector, 135F Fixed Temp/Rate-Of-Rise, Single-Circuit, Plain Housing

System Sensor 5624 - Detector - Conventional Heat Detector,

System Sensor 5601P 1 Circuit Heat Detector 135F

System Sensor 5602 1 Circuit 194F Heat Detector

5351E System Sensor 5351E Heat Detector

HONEYWELL 5251RB - Sensors & Switches & Heat Detector Supplies

FIRE-LITE SD365

System Sensor 5603 - Detector - Conventional Heat Detector,

System Sensor 5602 Mechanical Heat Detector

System Sensor 5602 194F Fixed Temp/Rate-Of-Rise, Single-Circuit Mechanical Heat Detector

System Sensor Heat Detector 5601P