System Sensor 5601P 135 Degree Fixed Temperature Heat Detector

System Sensor 5600 Series Model No.5601P Heat Detector NEW (Old Stock)

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

System Sensor 5600 Series #5601P Heat Detector 135 Degree Fixed Temperature

System Sensor 5601P 135 Degree Fixed Temperature Heat Detector

5601P System Sensor Heat Detector

System Sensor 5601P 135 Degree Fixed Temperature Heat Detector

System Sensor 5601P Mechanical Heat Detector, 5600 Series, 135F Fixed