... the information of our products.1.Specifications of 600W electronic ballast Main Input Voltage120V/208V/220V/230V/240V( ... , more stable quality, longer life time.400V 600w electronic ballasts offered by requests.For more products information, please ... contact us.Best RegardsDavid SongSales ManagerQidong Sunkan Electronic Co.,LTD. 400V 600W electronic ballast for hydroponics/greenhouses,UL,CE,TUV ...