Features: CCT-28 is a multi-zone central heating system intelligent hub controller 8 channel concentrator with indicator. The thermostat corresponds to valve, which is indirectly connected to the actuator. Up to 3NC actuators can be connected to 1 zone. In heating system, the actuator opens and closes the valve according to the thermostat setting of . Each thermostat controls the heating independently to heat different areas of . The intelligent multi-zone central heating system controller is a 8 channel thermostat controller with indicator light. This unit is used to centrally process floor heating or thermostat signals, transmit instructions to control the opening or closing of floor heating electric valves, and realize zone control. While controlling the electric actuator, the passive connection of the heat pump host, boiler and external water pump (mixing center) can be controlled. Specifications: Part name: Heating controller Size: 177 x 110mm Power supply: 100-240VAC, 50/60Hz 10A Passive output (boiler): 8A Circulation pump output: 250VAC, 8 (5) A No electrical connection: 1 normally open (common terminal) Number of circuits: 8 loops. Maximum number of actuators in a loop: 3. Exit delay: 200S. Thermostats correspond to zone valves, which are indirectly connected to actuators. Up to 3NC actuators can be connected to 1 zone. CCT-28: 8 thermostats can be connected. 1 thermostat corresponds to 1 zone valve, and 1 zone can be conn Material: Plastic Color: As shown Due to different product batches, the appearance , but it not affect the use Package Contents: 1 x Heating Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.