Products for Energy            Local Heating / Refrigeration, Communal Heating / Refrigeration > Heating              Heat calculators                                 Temperature measuring range °C Product Data interface Out- puts Relay output Analog output Special functions Power supply   <click on icon>     -30 to +300 water / other heat carrier M-BUS RS232 RS485 2-8 yes yes yes mains, 230 V low voltage         0 to +200 water M-BUS 2 yes yes no mains, 230 V low voltage         0 to +170 water M-BUS LON 2. M-BUS 2 yes no no mains, 230 V low voltage, battery- powered

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