Single Gate Automatic Opener Kit, Opens Gates Up To 12' Long & Up To 300 LB, AC Or Solar Compatible, Includes Opener, Entry Transmitter, Mounting Hardware, 12V Transformer, Control Box , Installation Instructions & Video, Adjustable Automatic Closing 0 To 120 Seconds & Adjustable Obstruction Sensing, 12V Battery Back Up For Power Failure, Battery Not Included.