Genie 1028 Pro Relia G 650 DC Garage Door Operator Belt Chain Drive HomeLink HEADY ONLY NO RAIL INCLUDED Belt or Chain Drive DC motor 5 Year Motor Limited Warranty ** 1 light bulb ? Genie LED light bulbs recommended (60 watt max if incandescent bulb is used.) C-channel rail for strength aesthetics Compatible with Aladdin Connect smart device system Intellicode Security to stop potential code thieves HomeLink Car2U compatible (No external repeater box or bridge needed.) Accessories Special Features Powerful DC motor allows for quiet operation. Opening speed up to 6.5" per second.? (Operates residential sectional doors up to 8' high.) Steel reinforced belt or chain drive ? choose the drive option that best fits your needs. Strong C-channel rail design that also helps conceal the rotating belt or chain for better aesthetics.? Auto-Seek Dual Frequency system automatically seeks the best frequency between 315 or 390 MHz in which to operate, depending on any nearby frequency interference source. Light is positioned toward inside of garage instead of toward garage door to give illumination where you need it most. Genie LED bulb recommended, 60 watt max if incandescent used. Pre-programmed remote is ready to use right out of the box. (Simple steps to change programming if desired.) Standard Features Safe-T-Beam Non-Contact Reversing System Puts an invisible beam across the door opening. The door stops and reverses to open position if anything passes through the beam. GenieSense? Monitoring and Diagnostic Technology Provides safety by continuously monitoring operation of the door, stopping the operation to alert you when significant changes occur. IntelliCode Access Security System Superior encryption technology (also known as rolling codes) that prevents piracy of the radio signal that opens your garage door by continually seeking a new code from billions of combinations. HomeLink Car2U Compatibility Works with ALL HomeLink and Car2U systems regardless of when those systems were made. No additional external repeater box or compatibility bridge needed.