Power supply for generating the necessary system voltage. One output 30 V DC with choke on bus terminal. Consisting of rail-mounted device with QuickConnect 3-pole plug-in terminals for power supply, green LED to indicate power supply, red LED to indicate short-circuit or overload protection, KNX bus terminal 2-pole and labelling field. Main features Product colour Grey Buffer battery Yes Energy protection features Overload protection, short-circuit Power AC input voltage 230 V AC Input frequency 50 - 60 Hz DC output voltage 30 V DC Output current 0.64 A Operating conditions Temperature range in operation 5 - 45 °C Temperature range during storage 20 - 70 °C Weight and dimensions Width 72 mm Depth 64 mm Height 90 mm.