The Genie Chain Drive 500 (Model 1035-V) is a 1/2 HPc chain drive garage door opener providing value and durability. The Chain Drive 500 garage door opener comes with a limited 5 year motor warranty and includes 1 pre-programmed remote, a wall button and Safe-t-Beam. IntelliCode Access Security System: Superior encryption technology (also known as rolling codes) prevents piracy of the radio signal that opens your garage door by continually seeking a new code from billions of combinations. This opener is compatible with HomeLink & Car2U as well as the Aladdin Connect smart device enabled garage door controller. Designed specifically for 7 ft. garage doors - extension kit required for 8 ft. (EKTC, SKU 100454) door.