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Features: This package is used for the centralized processing of floor heating or air-conditioning thermostat signals, and transmits directions to manage the opening/closing of the ground heating electric valve and performs zone temperature control. At a similar time controlling the electric valve, it is going to control the passive linkage of the heat pump host, the boiler and the exterior water pump(mixing center) or the active linkage management of the three-line one-control valve and the two-line valve. It could be managed via pulling the code to control the three-gear delay linkage management of 0~30~45~60~120s. It might help 8-channel surface heating thermostat with 220V energy supply, and the wiring is safe and convenient. It supports the exhibit of the partition management indicator light, and the working reputation is apparent and convenient. Specifications: Voltage: AC220±10% 50/60Hz Terminal Load: max. 3A (resistive load) Power consumption: <2W Environment Temperature: 0℃~45℃ Humidity: 5~95% (no condensation) Current Load: 3A for water heating/water boiler/gas boiler Item Size: 24 * eleven * 4/ nine * 4 * 1 Item Weight: 400g/ 14 Packing List: 1 * Controller