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Horstmann's Electronic 7 immersion heater control is instantly compatible with tarrifs that keep to Greenwich Mean Time and those that vary with British Summer Time.
* Fully interchangeable with earlier versions using plug-in connectors.
* Suitable for use with single, dual or twin element immersion heaters
* Precise and flexible programming
* Pre-Programmable automatic boost and one hour manual boost
* Automatic Summer/Winder time adjustments
* Two-year battery reserve
* Direct replacement, using existing wall-box, for Economy 7 Quartz, Electronic 7L & Maxistore
* Direct replacement, using existing wall-box, for Newlec NLQE7, NLE7
* Easy installation using standard size Economy 7 wall-box, with plug-in wiring
* Most suitable replacement for Pactrol Micro 7+ and Sangamo E7.
Click here for the user guide
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