![SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com](https://m.media-amazon.com/images/I/81tvCLO-nbL._AC_UF350,350_QL80_.jpg)
SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com
![System Sensor 4WT-B 4-wire, photoelectric i3 smoke detector with a 135 Degree fixed thermal sensor: Amazon.com: Tools & Home Improvement System Sensor 4WT-B 4-wire, photoelectric i3 smoke detector with a 135 Degree fixed thermal sensor: Amazon.com: Tools & Home Improvement](https://m.media-amazon.com/images/I/4187xTnWb3L._AC_UF1000,1000_QL80_.jpg)
System Sensor 4WT-B 4-wire, photoelectric i3 smoke detector with a 135 Degree fixed thermal sensor: Amazon.com: Tools & Home Improvement
![SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com](https://m.media-amazon.com/images/I/411VxVYgaML._AC_SY200_QL15_.jpg)
SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com
![Amazon.com: SYSTEM SENSOR 2WT-B 12/24 VDC, 2-Wire, with Base, Thermal, Detector, I3 Series : Tools & Home Improvement Amazon.com: SYSTEM SENSOR 2WT-B 12/24 VDC, 2-Wire, with Base, Thermal, Detector, I3 Series : Tools & Home Improvement](https://m.media-amazon.com/images/I/71QQW2gJb3L.jpg)
Amazon.com: SYSTEM SENSOR 2WT-B 12/24 VDC, 2-Wire, with Base, Thermal, Detector, I3 Series : Tools & Home Improvement
![SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com](https://m.media-amazon.com/images/I/411VxVYgaML.jpg)
SYSTEM SENSOR 4WTA-B 4WTAB 12/24 VDC, Photoelectric Smoke Detector with Thermal, Sounder, and Base - Smoke Detectors - Amazon.com
![System Sensor 2WTA-B I3 Series 2-Wire Photoelectric Thermal Smoke Detector With Sounder | AlarmLiquidators.com System Sensor 2WTA-B I3 Series 2-Wire Photoelectric Thermal Smoke Detector With Sounder | AlarmLiquidators.com](https://cdn11.bigcommerce.com/s-6ythiq/images/stencil/1280x1280/products/224/1371/ZWTA-B__70674.1569426692.1280.1280-removebg-preview__16633.1668480579.png?c=2)
System Sensor 2WTA-B I3 Series 2-Wire Photoelectric Thermal Smoke Detector With Sounder | AlarmLiquidators.com
![System Sensor 4WTR-B Photoelectric i3 Series Smoke Detector, 4-Wire, Thermal Sensor, Form C Relay (4WTR-B ) System Sensor 4WTR-B Photoelectric i3 Series Smoke Detector, 4-Wire, Thermal Sensor, Form C Relay (4WTR-B )](https://cdn11.bigcommerce.com/s-6ythiq/images/stencil/1280x1280/products/446/1550/4WTR-B__49148.1669751479.jpg?c=2)