ALEKO AR1800NOR Rack Driven Sliding Gate Opener for Gates up to 45 Feet Long 1800 Pounds Gear rack driven sliding gate opener can be used to open gates up to 1800 pounds and 45 feet in length User programmable and user erasable remote codes; supports up to 6 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 it encounters an obstruction on closing or opening Includes (1) AC 110V motor and (2) remotes and all needed installation hardware, gear racks sold separately