Liftmaster LA400PKGU Dual Swing Automatic Gate Opener Kit, Battery Backup, Receiver & Photocell Included! and Receiver.<br> 2 arms<br> 1 Controller<br> Comes equipped with a photocell<br> Max gate size: 16ft each<br> Max gate weight: 850lb. each<br> Solar ready<br> Limited parts warranty provided by Liftmaster: 2 years<br>