Electric Heating Element in copper, G 6/4", thermostatic head, 3x230/400V, longer non-heating end for combination thermal stores, adjustable thermostat and safety temperature limiter, contactor, inputs for remote control by controller and Ripple control, 2m 7-core power supply cable, heating rod without surface finish suitable for heating water, longer non-heating end specifically for DUO, HSK, VEGA thermal stores.