Power supply for audiosound bus systems Bus system (X1) In plastic housing for rail mounting Bus system or wall mounting. Size: 12-DIN module, low installation depth. Protection class IP30. Electronic protection against overload / short circuit. Equipped with terminals for the bus of the main line and terminals for the bus connection of 3 external stations. Up to 108 audio indoor stations. Button for manual programming with associated LED display. Management of access control via ID cards and ID chips.Supply via power supply 230 VAC 50/60 Hz.