347V 1000w HPS electronic ballast 1)OEM&ODM ... the information of our products.1.Specifications of 1000W electronic ballast Main Input Voltage120V/208V/220V/ ... , more stable quality, longer life time.347V 1000w electronic ballasts offered by requests.For more products ... RegardsDavid SongSales ManagerQidong Sunkan Electronic Co.,LTD. 347V 1000W HPS electronic ballast for hydroponics/greenhouses,UL,CE,TUV, ...