Abstract: The invention relates to an emergency lighting system (100), comprising a DC bus (103), at least one driver (101) for emergency lighting means that is connected to the DC bus (103), wherein the at least one driver (101) is further connected to a local battery (102), at least one central battery (105), a bus manager (104) connected to the at least one central battery (105), wherein the bus manager (104) further comprises output terminals for connecting the bus manager (104) to the DC bus (103). The bus manager (104) comprises a communication interface (104a) for communicating with the at least one driver (101), wherein the bus manager (104) is configured to receive an energy supply information from the at least one driver (101) and/or from the central battery (105), wherein the bus manager (104) is configured to control the at least one driver (101) to receive a power supply from the local battery (102) or from the central battery (105) based on the energy supply information.

Abstract: An emergency operating arrangement for at least one building technical device is provided, comprising a power supply unit, and an emergency supply unit, the power supply unit and the emergency supply unit being adapted to be supplied by an electrical supply and being configured to output a DC voltage, wherein the emergency supply unit is configured to detect an emergency situation and being configured to output a DC voltage higher than the DC voltage output by the power supply unit when the emergency situation is detected.

Abstract: A method for configuring an electronic element (e.g., a ballast) in a lighting system prior to powering up the lighting system uses a wireless communication interface in the electronic element based on near field communication or radio frequency identification communication. An external configuring device, such as a programmed smartphone or tablet, is equipped with a wireless communication module and transmits configuration data to the wireless communication interface which in turn writes the data to memory in the electronic element without power being supplied to the electronic element. The control for the electronic element reads the configuration when it is powered up.

Abstract: The invention relates to a method for configuring an electronic element in a lighting system wherein the method comprises the steps of retrieving configuration information from a machine-readable medium by means of a configuring device; sending the retrieved configuration information from the configuring device to the electronic element in the lighting system; and storing the configuration information into a information storage means of the electronic element in the lighting system.

Abstract: An emergency operating arrangement for at least one building technical device is provided, comprising a power supply unit, and an emergency supply unit, the power supply unit and the emergency supply unit being adapted to be supplied by an electrical supply and being configured to output a DC voltage, wherein the emergency supply unit is configured to detect an emergency situation and being configured to output a DC voltage higher than the DC voltage output by the power supply unit when the emergency situation is detected.