Hygrothermostat for simultaneous control or monitoring of temperature and humidity in offices, residential properties and hotels, as well as swimming pools, conservatories and residential baths and suitable for all types of heating. The device can be operated using 24 V~ or 230 V~ as required. With electric underfloor heating, ensure that the output from the heating cannot overheat the screed, even during continuous operation. With hot water heating systems, a max. of 10 valves (closed when de-energised) should be connected to the heating output, or a max. of 5 valves (open when de-energised) to the cooling output. When cooling, a max. of 5 valves (closed when de-energised) should be connected to the cooling output, or a max. of 10 valves (open when de-energised) to the heating output. Where necessary, thermal cut-outs may also need to be installed. Max. switching current: Dehumidifying (terminal 9) 5 (0.2) A, humidifying (terminal 8) 3 (0.2) A, heating (terminal 1) 10 (4) A at 230 V AC / 1 (1) A at 24 V AC, cooling (terminal 2) 5 (2) A at 230 V AC / 1 (1) A at 24 V AC, switching power: Terminal 9: 1150 W, terminal 8: 690 W, terminal 1: 2300 W at 230 V AC / 24 W at 24 V AC, terminal 2: 1150 W at 230 V AC / 230 W at 24 V AC