The FM502 Automatic Gate Opener is Mighty Mule’s strongest dual gate operator. As a Home Depot Exclusive the Access Package offers 2 additional Single Button Remotes (FM135) and a Wired or Wireless Digital Keypad (FM137). The FM502 heavy duty gate opener is designed for dual swing gates up to 18 ft. or weighing up to 850 lbs. per panel. The Mighty Mule 502 gate opener is ideal for ornamental, vinyl, tubular steel farm gates, chain link or wood gates.