Speaker, Marked Fire Strobe, Finish White, Wall Mounting, Flash (Candela) 15/185, Standby Current (uA) 0, Depth (In.) 1-29/32, Height (In.) 5-39/64, Length (In.) 5-39/64, Tube Length (Ft.) 1, Width (In.) 4-45/64, Ambient Temp. Limits (F) 32 to 120 Degrees , Alarm State (mA) 44 to 326, Humidity Range ( Percent RH) 10 to 93, Standby State (mA) 0, Voltage 12/24VDC, Standards UL Listed, CSFM, FM, Includes Mounting Plate, For Use With Fire Alarm Panel