1. led power supply, power supply led, 12v power supply 2. built-in ... 0.5%Protection functionOverload protection105% - 150% rated power, automatic recovery eOver-voltage protection105% - 150% ... EN55022 class A EN61347-2-13:2008 standardsEnvironmentalworking temperature- 20 ° ~ 60 ° c / 20% ~ 90% RH (no frost)Storage temperature40 ... , 150W, 200W, 350W, 400W available. 12V/24V DC 350W LED Power Supply