Speaker, Marked Fire, Finish Red, Wall Mounting, Peak Output (dBA) 88, Standby Current (uA) 0, Depth (In.) 1 in, Height (In.) 6 13/16 in, Length (In.) 6 13/16 in, Tube Length (Ft.) 1, Width (In.) 6 27/32 in, Ambient Temp. Limits (F) 32 to 120 Degrees , Humidity Range ( Percent RH) 10 to 93, Standby State (mA) 0, Voltage 12/24V DC, Standards UL Listed, CSFM, FM, Includes Mounting Plate, For Use With Fire Alarm Panel