Isolated led drive power supply, 18W, 420mA, 7 years' experience, manufacturer supply ... automatic recoveryInsulation characteristicsthe input end and the output end: 3KVACWorking Temperature-30°C to +60°CAnti vibratility10-500HZ, 2g, 10 minutes ... when short circuit, and it wil be recovery by itself.For light source(3528) 12 in series and 24 in parallel ...