Horstman Economy 7 Quartz Timeclock

 

Integral timeswitch and boost control. Boost timer 0-60 minutes. Quartz controlled. 150 hour battery reserve. For use with single or dual element immersion heaters, or with two separate, single element immersion heaters. Maxistore specification.

These immersion heater controls, rated at 3kW, have been developed specifically for use with Economy 7 and White Meter tariffs, and can also take full advantage of more recently developed cheap-rate tariffs.