Schneider Electric KNX. For buffering the bus voltage. An external lead-gel battery with a voltage of DC 12 V (SELV) can be connected to the emergency power supply REG for buffering in the event of a complete power failure. The lead-gel battery is recharged or the charge level is maintained using the integrated charging electronics. A binary input can be connected to record the operating states (mains voltage, error warning, battery operation). For mounting on TH35 top hat rails in accordance with EN 60715. A data rail is not required. Mains voltage AC 110 - 230 V, 50-60 Hz. Output for power supply Output voltage DC 30 V +/-2 V. Device width 4 HP corresponds to approx. 72 mm. Scope of delivery With connection terminal and cable cover.