Housing-integrated sensor- and cleaning-device with a sensor housing for being assembled to a vehicle (V), in particular a commercial vehicle (CV), and a connector means is integrated with the housing, wherein the sensor housing is further adapted to house at least one sensor to be connected to the connector means and for monitoring environmental conditions of the vehicle (V), wherein a sensor adapter is resided in the housing to hold the at least one sensor , wherein the adapter has a number of one or more assembly-fittings to hold the at least one sensor each in a monitoring position, and - a placeholder is integrated with the housing to hold a washer-body of a cleaning-device in position as to afford cleaning of the at least one sensor, and a cleaning-device (CD) connectable to a valve assembly (VA) by a pneumatic and hydraulic flow path (AFP, HFP) of a cleaning-device system (CDS) and a sensor (S) characterized in that - the cleaning-device (CD) is adapted for wash cleaning, in particular spray cleaning, of a sensor surface (S101) of the sensor (S), the cleaning-device (CD) comprising a washer-body connectable by a washer supply-periphery with the valve assembly (VA), wherein - the valve assembly (VA) is adapted for control of selectively supplying liquid fluid from a liquid reservoir (MQL) to the liquid fluid inlet and/or pressurized air fluid from a pressurized air reservoir (MQA) to the pressurized air inlet. a sensor housing for being assembled to a vehicle (V), in particular a commercial vehicle (CV), and a connector means is integrated with the housing, wherein the sensor housing is further adapted to house at least one sensor to be connected to the connector means and for monitoring environmental conditions of the vehicle (V), wherein a sensor adapter is resided in the housing to hold the at least one sensor , wherein the adapter has a number of one or more assembly-fittings to hold the at least one sensor each in a monitoring position, and - a placeholder is integrated with the housing to hold a washer-body of a cleaning-device in position as to afford cleaning of the at least one sensor, and - a placeholder is integrated with the housing to hold a washer-body of a cleaning-device in position as to afford cleaning of the at least one sensor, and a cleaning-device (CD) connectable to a valve assembly (VA) by a pneumatic and hydraulic flow path (AFP, HFP) of a cleaning-device system (CDS) and a sensor (S) characterized in that - the cleaning-device (CD) is adapted for wash cleaning, in particular spray cleaning, of a sensor surface (S101) of the sensor (S), the cleaning-device (CD) comprising a washer-body connectable by a washer supply-periphery with the valve assembly (VA), wherein - the valve assembly (VA) is adapted for control of selectively supplying liquid fluid from a liquid reservoir (MQL) to the liquid fluid inlet and/or pressurized air fluid from a pressurized air reservoir (MQA) to the pressurized air inlet. - the cleaning-device (CD) is adapted for wash cleaning, in particular spray cleaning, of a sensor surface (S101) of the sensor (S), the cleaning-device (CD) comprising a washer-body connectable by a washer supply-periphery with the valve assembly (VA), wherein - the valve assembly (VA) is adapted for control of selectively supplying liquid fluid from a liquid reservoir (MQL) to the liquid fluid inlet and/or pressurized air fluid from a pressurized air reservoir (MQA) to the pressurized air inlet. <EOS>