Light Rail (2) 3.5 IntelliDrive Kits Motor with Rail, Robotic Grow Light Mover Genuine Solidly Made in USA Much better yields when our grow lights move because more leaf area is reached with better light, so no hot spots and no shadow patterns. Plus we cover about 30% more area, and thats per grow light. See ppfd chart below sponsored products. (2) LightRail 3.5 IntelliDrive Kits complete, each with 10rpm IntelliDrive Robotic Motor, two-piece 2 meter (6ft6in) Rail, hdw and instr, and with a 0-60 second adjustable time delay. LightRail 3.5 IntelliDrive works with 110v, US and Canada compatible. Only LightRail performs over many years like a workhorse with the power and endurance for any grow light weight. Beware of cheaply made imitations. Genuine LightRail, the one that meets important guidelines (see below) and solidly made in the USA since 1986. Manufactured by Gualala Robotics. If it does not have the LightRail logo, see Motor photo, it is not a LightRail. Keep it Real, Keep it LightRail.