Genie IS550-1 1/2-Horsepower AC Screw Drive Garage Door Opener Direct drive for longer life and greater reliability Solid steel screw for strength and security Intellicode access security system prevents unauthorised entry Self-diagnostic Safe-t-beam system reverses door in the event of a breach and alerts homeowners of improper installation or malfunctions 1-button remote and 7 year motor and 2 year parts warranty. * * Limited and non-transferable. See warranty for details.