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Dual electronic thermistors add 135°F (57°C) fixed temperature thermal sensing on the FSP-951T
A common mounting base accommodates the TC806B or TC807B
Communication takes place over the power (+ and –) lines
this allows impedance changes in supervised loop to the monitored device detected
also unipolar ionization chamber
System Sensor 2251TB Intelligent Photoelectric smoke detector with thermal 2251 Dual electronic thermistors add 135°FThe System Sensor 2251TB is an Intelligent Addressable Photoelectric Smoke Sensor w Thermal (135F 57. 2C fixed) Sensor. The sensitivity of 200 Series detectors can be programmed using the control panel software to suit the environment. In addition, detector sensitivity is continually monitored and reported to the panel.
