The MM371W automatic dual gate opener brings unrivaled convenience with smart features that allow control from anywhere using your smart phone app and with the purchase of the Mighty Mule MMS100 Wireless Connectivity Kit (sold separately). Designed for medium-duty dual swing gates up to a maximum of 16-feet long or maximum weight of 550 pounds. Ideal for the Do It Yourself property owner with helpful tools such as online how-to videos and unlimited access to 24-hour technical support are available for a successful installation.Required for operation (and sold separately): 12V automotive or marine-type battery that produces a minimum of 250 cold cranking amps (CCA).Gate opener kit is for single swing gates up to a maximum of 16 ft. long or a maximum weight of 550 lb.Includes a 3-button entry/exit remote with a visor clip. an AC transformer. a control box with a system controller and all required mounting hardware.DIY friendly with detailed installation instructions. access to online how-to videos and unlimited 24-hour technical support.