The 3BXT exterior Open/Stop/Stop 3 button control stations are used to operate gate openers and garage openers from a distance with a simple push of a button. Simple to install, they can be used to operate anything from a single gate to multiple gates or doors on your property. Wire is run to the open/close/stop relay on your garage door opener or gate operator. The wire gauge can be 18-guage or 22-guage and the system can operate up to 120 volts.