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System Sensor 4WTR-B Photoelectric i3 Series Smoke Detector
Using advanced air sampling technology
It is part of the 100 Series of Plug-In Smoke Detectors from System Sensor
It is part of the Genesis LED G4S Series
• Schools and universities
Notifier FST-851RA Rate-of-Rise Thermal Detector ELSTR System Sensor 4WTR-B Photoelectric i3Notifier FST 851RA Rate of Rise Thermal Detector that works with ONYX Series panels It's an intelligent sensor that uses a thermistor sensing circuit for a quick response. The FST 851RA is designed to protect open areas with a 50 foot spacing capability. The FST 851RA has a diameter of 6. 1 (155 mm) when installed in B210LP, and 4. 1 (104 mm) when installed in B501. It has a height of 2. 0 (51 mm) and weighs 4. 8 ounces (137 gm). The installation