A thermocouple is a device that is made of two different metals that produce a charge when heated on one side. This small charge turns on an electromagnet which opens a valve and no longer restricts the flow of gas or water .
Replaces most existing thermocouples found on domestic gas fires
Technical specification
Waist Sizeaa27cj94gvERP RatingNot ApplicableSupplier Part NumberT20-900BManufacturer Model No7000/EL/900PCBrand NameBlack Teknigas