Hour Meter, Display Type Electromechanical, Time Range 0 to 99999.99, Bezel Face Size 1.88 in x 1.88 in, Bezel Face Shape Square, Bezel Face Type Flush Mount, Elapsed Time To 99,999.99, Operating Voltage 24V AC, Hz 60 Hz, Number of Digits 7, Display Units Hours/Hundredths, Bezel To Back Length 2.36 in, Depth 2.36 in, Length 2.44 in, Width 1.89 in, Ambient Temp. Range -40 Degrees to 160 Degrees F, NEMA Rating 1, Material of Construction Plastic, Input Type Electrical, Reset Type Non Resettable