Tork 1101b Spst 40a 120v 24hr. Dial Timer Scheduling is minimum on is setting 20 minutes with a minimum off setting of 75 minutes, dial accommodates up to 12 pairs of trippers P47, it features manual override until the next regularly scheduled on or off automatic operation resumes Input-Voltage of 120 VAC 60 Hz and output contacts is SPST with timing accuracy of Line frequency, terminal range of #8 - #14 AWG Lockable hasp, metal indoor NEMA 1 enclosure Operating temperature range-40 to 165F (-40 to +74C) Power consumption of 3-Watt maximum