Interra 640 mA KNX Power Supplies generate and monitor the voltage (SELV) for KNX devices connected to the line. They feature a 640 mA bus load with an integrated choke and wide-range mains input for worldwide use. The bus line is isolated from the power supply by an integrated choke. Voltage output is short circuit and overload protected. Two color LEDs (Green and Red) indicate device output status. It has a wide input range from 85…265 V AC to 50/60 Hz.