We listened and learned from your input - now our Phantom Digital 1000W/240V Electronic Dimmable Ballast features a unique tri-mode dimmable micro-processor for even more energy savings. The Phantom is the most rigorously tested ballast on the market, featuring silent operation, durable and lightweight design, and maximum lumen output. The Phantom is also the only ballast on the market designed for vertical operation, for coolest running and optimum grow space.FeaturesDual resettable breakers protect lamp and household circuitsThree operating configurations - vertical, horizontal, or hangingDrives the highest light output for maximum plant growthUniversal reflector adaptor and 8 ft heavy duty cord includedUnlike magnetic ballast, Phantom runs completely silentPatented Lock & Seal BAREF lamp cord installedInternal RF shieldingTriple surface aluminum fins and elevated rubber feet provide the most efficient cooling in its classInternal resin coating protects components for long lifeDo not use with timer TM01240, also known as the Intermatic HB112. You must use the TMHDT104, or a lighting controller, such as the APCL4240.