Electromechanical Timer, 24-Hour, Number of Poles 1, Contact Form SPDT, Voltage 12 to 24V AC/DC, Amps 21 A, Contact HP @ 120V 1 hp, Contact HP @ 240V 2 hp, Day Skipper No, Enclosure Type Steel, NEMA Rating 3R, Min. Time Setting 15 min, Max. Time Setting 23 hr 45 min, Max. On/Off Cycles 48, Width 3 5/16 in, Depth 2 5/16 in, Height 3 1/2 in, Number of Trippers Included 96, Operating Temp. -4 Degrees to 131 Degrees F, Description/Special Features Battery Backup, Mount Panel