This system features an auto-close option. You can set the gate to close 12, 24, or 36 seconds after it opens. You can add up to 23 extra remotes that can control this system. It features 2 main safety systems: the RF Hopping Code Technology prevents your remote code from being accessed by others. In the event of a power outage or emergency you may also use manual release key. This kit contains all the hardware required to convert your everyday hinged gate to a sliding gate. It works for all gates up to 40ft long and weighing 1400lbs. Control it very easily using the 4 button remote. The options are open, close and stop. The gate must be on level ground and cannot operate on an incline. 40ft (includes 20ft of chain). 43ft/min (8.5/second). 100ft (Frequency: 433.92 MHz). Max # of Remotes. 1x Sliding Gate Opener Unit. 1x 20ft of Chain (Can be split into 2x 10ft Chains). 2x Manual Release Keys. The item “Automatic Sliding Gate Opener 1400lbs Motor Auto-Close Security System” is in sale since Monday, May 22, 2017. This item is in the category “Home & Garden\Home Improvement\Building & Hardware\Garage Doors & Openers\Opener Systems”. The seller is “globalfreeshipping” and is located in Memphis, Tennessee. This item can be shipped to United States.