Intermatic 24 Hour Mechanical Time Clock 120 V PB913NIntermatic 24 Hour Mechanical Time Clock PB913N Timer for Pools, Hot Tub and Many Other Applications Dimensions: Height: 3 1 4" Width: 2 3 4" Case only depth: 1 5 8" Load Rating: 20 Amps resistive 120 277 volts Motor Voltage: 120 Volts Timing Cycle 24 hour timer dial 48 timer pegs 30 minute per peg Minimum On time 1 hour Maximum On time 23 hours Intermatic PB913N