SYSTEM SENSOR D4S Photoelectric Sensor
Photoelectric Sensor, Smoke Detector, Depth (In.) 2-1/2, Height (In.) 5, Length (In.) 7-3/4, Ambient Temp. Limits (F) -4 to 158, Air Velocity (FPM) 100 to 4000, Humidity Range ( Percent RH) 0 to 95, Standards UL, FM, Includes Duct Smoke Detector...
