... %,75%,100% FCC,CE,UL 600W Dimmable Electronic Ballast for HPS/MH lamphorticulture; hydroponic; ballast; electronic ballast Our products have been approved with FCC ... , MH150W, MH250W, MH400W, MH600W, MH1000W,MH200W-AC110V (WARM BOOT) 600W Dimmable Electronic Ballast for HPS/MH lamp