Most gate openers have an vehicle-reverse mechanism often called a Get in touch with sensor that stops the gate and reverses its course should really any one or something are available connection with the gate even though it’s transferring. AutoGate Northern Ireland www.ElectricGatesNewry.com 07855-781433 02830-886666 Contact Adrian for help, https://johnathankyjug.get-blogging.com/28506153/are-you-in-need-of-automated-gates-northern-ireland-why-not-adrian-on-07855-781433-for-help-and-advice-about-automating-new-or-existing-gates