system sensor smoke detectors for sale, brand-new and used.

You are bidding on Two System Sensor 2W-B i3 Series 2-wire, Photoelectric i3 Smoke Detectors. These items are new in the box and ready to install!!!

NEW System Sensor i3 Series Photoelectric Smoke Detector Model 4W-B 4-wire plug-in photoelectric detector with base. 12/24 volt

NEW System Sensor i3 Series Photoelectric Smoke Detector Model 2WT-B 2-wire plug-in photoelectric detector with base. 135?F Thermal Sensor 12/24 volt

You are buying 3 Brand New System Sensor 2W-B Smoke Detectors. These are 2-wire 12-24 Volts Smoke Detectors. The color is white.

New old stock. Has been sitting on the shelf for a while, but still new and guaranteed

The RTS151KEY remote test station is an automatic fire detector accessory designed to test duct smoke detectors from a convenient location. For 4-wire detectors, the RTS151KEY test station features a multi-colored LED that alternates between steady green and red. For 2-wire detectors, the LED illuminates red for alarm.

System Sensor 4WTA-B 4-Wire Smoke Detector 12/24V Operation Photoelectric Smoke with base, 135 Degree Heat Detector, and 85dB Sounder

System Sensor 2WTA-B 2-Wire Smoke Detector 12/24V Operation with Thermal Sensor and Sounder Photoelectric Smoke with base, 135 Degree Heat Detector, and 85dB Sounder

System Sensor I3 Series Photoelectric Smoke Detector with Base 2W-B Brand new in opened box. The box is a little distressed from storage.

Hello! These detectors are in new condition. A couple of the boxes have been opened but they are unused.

Excellent condition, was removed from the remodel of an industrial building.