KNX power supply 640 mA to supply other KNX devices connected to the KNX BUS. It contains a 29 V DC auxiliary output and has short-circuit and overvoltage protection. KNX choke included. As a backup device, it has an additional supply for the battery connection to keep the KNX installation active in the event of a power failure. Technical data: Supply: 230 V AC/ 24 V DC (battery) Current: KNX bus + AUX <, 640 mA Output voltage: 29 V DC Mounting: DIN rail (6 modules) For further technical data, please refer to the manufacturer's data sheet under documentation.