Horstmann Thermostats, 13A, 230 V ac

Electronic Economy 7 Controller

Compatible with tariffs based on Greenwich Mean Time, and varying with British Summer Time, this controller allows 3 off-peak heating periods to be set every 24 hours to maximise use of cheap rate tariffs, including split tariffs.

For use with single, dual or 2 element heaters
Pre-programmable automatic boost and 1 hour manual boost
Instant summer/winter programme change
Two year back-up battery reserve