The WH21 is an electric, water heater timer switch. This model is designed to schedule hot water automatically when needed. A preset schedule will be repeated daily unless you use the external manual push button. With the button, the water heater can be turned on or off ahead of schedule. Also, during highuse and lowuse periods, this device is set to turn the water heater on and off, respectively.

More Information

More Information
Country of Origin: MEXICO
Manufacturer: Intermatic
Condition: New
retail price: $59.99


  • Automatically schedule hot water when needed
  • Turns water on during high use and off during low use periods
  • Up to 12 on/off setting per day
  • External manual override button
  • Single pole/single throw


  • (1) Timer


  • Amperage (amps): 25
  • Voltage: 250 volts
  • Dimensions: 5.3 x 3.4 x 7.4 inches


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