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These simple controls are intended for use where cheap overnight heating of water is controlled by the Electricity Company's Radio Teleswitch, Radio Telemeter or tariff time switch.

* Simple to install and use
* Boost period adjustable between 0 and 120 minutes
* Neon indicator shows when boost timer is running
* Can be used with one or two immersion heaters
* Compatible with earth-leakage circuit breaker installations