Designed for use with Economy 7 off peak rate overnight electricity, the Economy 7 Quartz is the standard by which all other water heating controls are judged and is the all-time best seller in water heating controls. Quartz controlled to within 10 minutes a year Rechargeable battery keeps time during power interruptions Summer and winter time settings instantly visible Large terminals and back box for easy installation Indicator lights show whether on-peak or off-peak power is being used Up to 60 minute boost means extra hot water at any time Industry standard wall box and connections
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