LED power supply 12 V DC for 3900. / 3901. switchable, round. Cable length: primary side: 90 mm, secondary side: 80 mm, AMP coupling, primary side: 230 V AC, secondary side: 12 V DC, dimensions: D 57.5 mm, H 19 mm. Material: plastic, protection class on the room side: according to DIN EN 60529: IP20, protection class: (EN 61140) II, voltage: 230V AC 50Hz, power: 10W, type of dimming: switchable.