System Sensor i3 Series 2WTA-B 2-Wire Plug-In Photoelectric Smoke Detector Base

System Sensor 4WTR-B Photoelectric i3 Series Smoke Detector, 4-Wire Thermal Used

System Sensor i3 2WT-B Photoelectric Smoke Detector

System Sensor 2WT-B i3 Series 2-Wire Plug-In Photoelectric Smoke Detector Base

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System Sensor i3 Series 4W-B 4-Wire Plug-In Photoelectric Smoke Detector w/ Base

System Sensor i3 Series 4WTR-B 4-Wire Photoelectric Smoke Detector

System Sensor 2WTA-B Two Wire Plug In Photoelectric Smoke Detector NEW