Drayton ‎Wiser Thermostat Kit 3 - WT734R9K0902 Brand new boxed Free UK postage VAT invoice available on request Any questions please ask “Drayton Three channel thermostat pack ideal for properties with two heating zones. Enables you to control heating and hot water via the Wiser Heat app. Wire in existing cylinder thermostat for hot water control. conventional systems. Enables you to control heating and hot water via the Wiser Heat app. Wire in existing cylinder thermostat for hot water control.”