This underwater pond light transformer can hold up to 7 underwater pond lights. This transformer has the convenience of a photocell without the hassle of a dial timer. The photocell automatically turns on at dusk. Additional settings allow lights to automatically turn on a dusk and then off at 4,6,8 hour increments after that. Can provide power to seven 20 watt Aquascape Designs underwater lights. ponddepot@msn.com Copyright - All World Rights Reserved Pond bacteria, Pond Kits and Pondless Waterfall kits, Filter Pads, Underwater Pond Lights. pump replacements and pond algae control. Pond Depot provides excellent technical assistance and fast shipping for all orders. The staff at Pond Depot are highly trained and experienced in installing and maintaining ponds. We will gladly answer any questions that you have. Pond Depot your online pond superstore!