The LA400 has a powerful 24VDC motor, which provides exceptional starting torque and features soft start/stop operation. This promotes longer gate and operator life, as well as dependable performance. The LA400 is capable of operating gates up to 16 feet long and weighing up to 550 pounds.An on-board radio receiver is included with the LA400. Exclusive from Chamberlain ®, this provides a single remote control solution for gates and additional access points.