Tiella 800RLPKR300Z MonoRail 150W 12V Magnetic Remote Transformer Pack installs in an accessible location behind the ceiling or wall, and should be installed no more than twenty (20) feet from the power feed. Canopy mounts to a standard 4IN square junction box with round plaster ring (provided by electrician), and the Rail drops 2IN from the ceiling. Add up to six 50W elements or up to eight 35W elements. It is important that the electrician supply the correct gauge of THHN wire from the transformer to the junction box to prevent excessive voltage drop, which can cause fixtures to appear dim. The 800RLPKR300Z comes one kit per package: canopy, remote transformer, 8FT long hand-bendable Rail, two rigid standoff supports, and two end caps. Magnetic remote transformers have multiple secondary power taps to compensate for variations in voltage. An input voltage exceeding 120V may result in more than 12V on the system, which can shorten lamp life. Tech Lighting started small back in 1988. Since then we have continuously built our reputation for timeless design, precision engineering, and trust. Today, we are recognized as the industry leader in low-voltage lighting systems and for our expansive collection of premium light fixtures. At our core is an intense appreciation for art and science, sophistication and imagination. We race to introduce new innovations to the market - both in design and technology. We travel the globe visiting trade shows not just in our industry, but everywhere that design can be observed - from furniture to fashion. We partner with glass artisans throughout the world to create the highest quality blown glass. Though, it extends beyond glass. Every detail counts. Our passion does not end with product. We are fanatical about exceeding our customershighest expectations with short leads times, on-time delivery, expansive custom capabilities and the most knowledgeable and accessible customer service and technical support department in the industry.