Duct Smoke Detector, Photoelectric, Universal, Air Velocity (FPM) 100 to 4000, 2 1/2 in Depth, SYSTEM SENSOR, Mfr# D4120

Photoelectric, Duct Smoke Detector, Universal, Finish -, - Mounting, Peak Output (dBA) -, Flash (Candela) -, Standby Current (uA) -, Depth (In.) 2 1/2 in, Height (In.) 5 in, Length (In.) 14 3/8 in, Width (In.) -, Duct Opening -, Duct Width (Ft.) -, Ambient Temp. Limits (F) -4 Degrees to 158 Degrees F, Coverage (Square-Ft.) -, Air Velocity (FPM) 100 to 4000 fpm, Alarm Aux. Contact @ 250V 10 A, Alarm Aux. Contact @ 30VDC 10 A