For controllers with a switching output (3-point control). For activating valves of the KVDN… series in conjunction with individual-room control systems (ecos, NRT, RDT etc.). Existing systems can be upgraded with this drive by employing the appropriate adaptors. Two-part housing of plastic in pure white RAL 9010 on the VA120.1 and light grey RAL 7035 on the VA120.1 Integrated LED for indicating the operating state on the VA120.1 ; light-grey power cable (1.50 m in length, 3 × 0.5 mm2; 3 × 0.25 mm2 on the VA120.1) fixed in the housing. Can be fitted in any position between the vertical and the horizontal.