WINTER – OFF – SUMMER switch to control heating or air conditioning installations. Manual switch for selecting one of the three fan-coil’s speeds. It is possible to connect one thermostat to the terminals 4 and 6 (look the scheme on page 24), if this option is not used, the terminals are closing. Pollution degree 2. Red LED indicates system’s turning-on. Unit weight 0,17 KgDouble insulationElectric featuresPower supply 230V-50Hz. Consumption 1VA. Micro disconnection (1B). Pulse voltage 4000V.