Entry and exit loops, which are buried wires linked to a special gadget in the gate operator that functions like a switch to open or close your gate AutoGate Northern Ireland www.ElectricGatesNewry.com 07855-781433 02830-886666 Contact Adrian for help, advice or information on Electric Gate Installation or Electric Gate Repairs https://automatic-gate-opener-rep27399.bleepblogs.com/28336799/are-you-looking-cost-of-automating-existing-gates-why-not-adrian-on-07855-781433-professional-reliable-help-about-automatic-gates