... YearsProtectionHot Start Protection, Short Circuit Protection, Opening Circuit Protection, Over Current Protection, End of life of bulb Protection and so on ... .AdvantagesHigh Output Voltage Limited, the ignition current is smaller. Made with brand compponents, more stable quality, longer ... Co.,LTD. 400V 600W electronic ballast for hydroponics/greenhouses,UL,CE,TUV,DIN approved