Apollo Horticulture APL1000 Hydroponic 1000 - Watt HPS MH Digital Dimmable Electronic Ballast
Implementing magnetic tamper detection in electricity meters
Does My Reflector Need A Ballast? | What's On The Grow... | Holland Horticulture
Solus IG13-20ELSX Electronic 120V Fluorescent Lamp Ballast, Easy Install & Energy Saving, Great for Aquarium & Terrarium Lamp Lighting, UL & CUL, Operates Linear & Compact Fluorescent Lamps