The T6373 are designed to control the valve, or the valve and the fan in 2-pipe fan-coil applications. Setpoint range : 10…30oC. By means of a large setpoint dial Supply voltage : 230 V~, 50…60 Hz. Thermostat switch : S.P.D.T. Dimensions : 85 x 130 x 40 mm (w x h x d).