ALEKO AC1400NOR Chain Driven Sliding Gate Opener for Gates up to 40 Feet Long 1400 Pounds Chain driven sliding gate can be used to open gates up to 1400 pounds of 40 feet in length. User programmable and user erasable remote codes; supports up to 100 remotes on its own, or more with the use of an external receiver that is sold separately. Aluminum alloy chassis is corrosion resistant while still being light enough for 1 person to carry. For your safety, this model will stop and reverse if encounters an obstruction on closing or opening. Includes (1) AC 110V motor, (2) remotes, (1) 20 foot chain, and all needed installation hardware.