General
Other bus systems	Other
Mounting method	Other
Width in number of modular spacings	8
Number of outputs	4
Max. output current	0.5
Switching voltage	230
Degree of protection (IP)	IP20
Number of digital inputs	12
Bus system KNX
Bus system KNX radio
Bus system radio frequent
Bus system LON
Bus system Powernet
Radio frequent bidirectional
Bus connection included
Bus module detachable
Correcting variable consistent
Correcting variable switching
Valve protection function
Manual switch

For controlling heating and cooling applications in the room, such as radiators, underfloor heating
or a cooling ceiling. The device has 4 channels, each of which can be used to independently control a heating or cooling application. Each channel has an electronic valve output for controlling a thermoelectric actuator, as well as 3 inputs for recording and monitoring the room status (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) 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 VC/S 4.2.11 has an easy-to-use local control. The ABB i-bus tool can be used for extended diagnostic functions and improved commissioning.