For controlling fan coil units or fan convectors. Two thermoelectric valve drives or a motor-driven valve drive for heating or cooling can be controlled via two electronic outputs. The device has three relay outputs for fan control. One relay output switches an additional load of up to 16 A, such as an additional electric heater. The room status can be recorded and monitored via 4 inputs (can be used for window contact, dew point sensor, level sensor or temperature sensor). It is also possible to connect an analog room control unit (SAR/A or SAF/A) to the device's inputs. To regulate the room temperature, the device has an integrated room temperature controller, which can be used directly to control the device's outputs. The ABB i-bus tool can be used for extended diagnostic functions and improved commissioning.