Photoelectric Power Board Smoke Detector Alarm Current 135mA RMS @ 24V AC 35mA RMS @ 120V AC 65mA @ 24V DC Depth (In.) 2 1/2 in Height (In.) 5 in Length (In.) 7 3/4 in Ambient Temp Limits (F) -4 Degrees to 158 Degrees F Air Velocity (FPM) 100 to 4000 fpm Alarm Aux. Contact @ 250V 10 A Alarm Aux. Contact @ 30VDC 10 A Humidity Range ( Percent RH) 0 to 95 Percent RH Number Required 1 Standby State (mA) Max 21mA @24V DC/ Max 65mA RMS @24V AC/ Max 20mA RMS @120V AC Voltage 24/120