Red Strobe, Supervised Warning Light, Finish Black, 1/2 in Pipe, Surface Mounting, Alarm Current 0.7, Peak Output (dBA) -, Flash (Candela) 1,000,000 cd, Standby Current (uA) -, Depth (In.) 3 15/16 in, Height (In.) 5 1/4 in, Length (In.) -, Width (In.) 3 15/16 in, Duct Opening -, Duct Width (Ft.) -, Ambient Temp. Limits (F) -31 Degrees to 150 Degrees F, Coverage (Square-Ft.) -, Alarm Aux. Contact @ 250V -, Alarm Aux. Contact @ 30VDC -, Alarm State (mA) -, Amps AC 0.7 A