System Sensor 2251TB Intelligent Photoelectric smoke detector with thermal 2251 Activate on-board end-of-line resistors by

Activate on-board end-of-line resistors by setting “ON” switch SW100 (Channel A)

also unipolar ionization chamber

— B501BH Intelligent Sounder Base (B200SR Replaces B501BH series bases in retrofit applications)

Communication takes place over the power (+ and –) lines

They are smart analog standard addressable devices available in plug-in versions (UIO) and also in 1-group mounting versions

System Sensor 2251TB Intelligent Photoelectric smoke detector with thermal 2251 Activate on-board end-of-line resistors byThe 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.