The QTEC Wireless Remote Control system has a transmitter that is small enough to install into the tightest spaces inside your car or truck. Not recommend outside or in the engine bay. Connect your power/ground and plug in your QTEC's. It's as simple as that! Press and hold the button on the remote switch and let go at the desired position. All the way open, or just a touch. The choice is yours! Easy to use push button operation for partial or wide open settings. You retain control of the amount of sound! The 10900 works with many in-vehicle garage door opener functions such as the Home-Link systems. Wireless Adjustable Remote Controller 12v Receiver Two Wireless Key Fobs MPN: 10900 Specifications Hardware Included No Material Aluminum Part Type Exhaust Cutout Controllers Sold As Each Universal Fit Universal California Residents: Proposition 65 warning