SYSTEM SENSOR 2251 Intelligent Photoelectric Smoke Sensor 18/12 high decibel notification appliances for

high decibel notification appliances for use in fire or other signaling applications

The bases accept the F220 Family Photoelectric Smoke and Heat Detector Heads

and an exhaust tube

Output Voltage may be 25 or 70 VRMS

SYSTEM SENSOR 2251 Intelligent Photoelectric Smoke Sensor 18/12 high decibel notification appliances forModel 2251 is a plug in type smoke sensor that combines a photoelectronic sensing chamber with addressable analog communications. The sensor transmits an analog representation of smoke density over a communication line to a control panel. Rotary decade switches are provided for setting the sensors address. Two LEDs on the sensor are controlled by the panel to indicate sensor status. An output is provided for connection to an optional remote LED