Mighty Mule Dual Gate Convenience Package, Model# FM502-CNV Heavy-duty dual swing gate openers &#160;Keypad controls entry with PIN codes &#160;Professional-grade soft start/soft stop extends the life of the opener &#160;Easy-to-install low voltage system &#160;Designed for gates that are up to 18ft.L or weigh up to 850 lbs. per leaf