Abstract: A sensor arrangement comprises a dew point sensor for measuring the dew point characteristic in a room, and a temperature sensor for measuring the temperature characteristic on a wall surface of the room, means being provided for evaluating and/or storing the measured dew point characteristic and the measured wall surface temperature characteristic.

Abstract: The invention relates to a control device for use in a vehicle having a climate-control system. Means are provided for switching the ventilation to recirculated air operation. A first sensor for measuring the tendency of the window to become misted is arranged behind the recirculated air flap at the side facing the inner space of the vehicle.

Abstract: A sensor arrangement comprises a dew point sensor for measuring the dew point characteristic in a room, and a temperature sensor for measuring the temperature characteristic on a wall surface of the room, means being provided for evaluating and/or storing the measured dew point characteristic and the measured wall surface temperature characteristic.

Abstract: The invention relates to a coolant circuit (5, 6, 7, 7a, 8, 8a), preferably for cooling a drive or an engine (2) of a motor vehicle (1), in particular of a passenger car, comprising: a controller (8) which, in order to control the temperature of a cooling fluid (7a), activates an electrically operated fan motor (5). The controller (8) is in thermal contact with the cooling fluid (7a) in order to be cooled and is formed to detect the temperature of the cooling fluid (7a) by way of a temperature sensor (8a) which is preferably provided at the controller (8). A defined temperature of the cooling fluid (7a) can thereby be set without a control signal from a master control or regulating device being required for this purpose.