Intermatic T101M 24-Hour Mechanical Timer SPST Mechanism 120 VAC, SPST switch Electrical loads up to 40 Amps 1 to 12 on/off operations each day with minimum on/off times of 1 hour Manual override, includes one On and one Off tripper Wiring cover (Insulator) is used for multiple controls and the T101M only has 3 wire connection terminals Wiring cover (Insulator) is used for multiple controls and the T101M only has 3 wire connection terminals