Power unit for music stand light 12285. Electronic regulate power unit (stabilized design) to comply with EN 60724/50558. Input 110 to 240 V AC. Output 4.5 V DC - 900 mA. Frequency 50 to 60 cycles per second. DC-hollow plug 2.1 x >12 mm (polarity negative outside), cable length approx. 2 m, cable removable from unit (plug). CE-mark.