Fire Alarm Pull Station, Single Action, Tool Reset, Finish Red, Wall Mounting, Depth (In.) 2 1/2 in, Height (In.) 4 9/16 in, Length (In.) 3 1/8 in, Tube Length (Ft.) 1 ft, Humidity Range ( Percent RH) 95 Percent RH, For Use With 60V DC/30V AC Conventional Fire Alarm Systems