... the information of our products.1.Specifications of 400W electronic ballast Main Input Voltage120V/208V/220V/230V/240V ... compponents, more stable quality, longer life time.347V 400w electronic ballasts offered by requests.For more products information, ... contact us.Best RegardsDavid SongSales ManagerQidong Sunkan Electronic Co.,LTD. 347V 400W electronic ballast for hydroponics/greenhouses,UL,CE,TUV ...