HR-02 underfloor heating KNX wiring centre is designed to be used in conjunction with KNX room thermostats for smart home automation control. 8 zones or 16 zones can be controlled as well as providing an output for circulation pump and boiler. Up to 5 thermal actuators can be connected to each zone. Item No.: HR-02 KNX connection  Can work up to 16 KNX room thermostats Max. 16 thermal actuator connectors. Boiler and Pump delay time settable Din rail connection