... power supply, 12W, 280mA, 7 years' experience, manufacturer supply with most competitive price. Model:BR-T5 (External)Power:12wThe outputDC 30 - 40V,280mAAccuracy of the output ... current limiting,and automatic recoveryInsulation characteristicsthe input end and the output end: 3KVACWorking Temperature-30°C to +60°CAnti vibratility10- ... ) 12 in series and 16 in parallel External LED drive power supply