ALEKO MA600-120V 1/2 HP 110V AC Commercial and Residential Swing Gate Opener up to 600 Pounds 9 Feet ALEKOs  horsepower gate opener motor and reduction box is an efficient and reliable way to open your swing style gate Reliable micro switch limit for simple adjustment, easy access and easy release means gate can be controlled during low power or no power situations Master and Slave operator allows you to open a dual leaf gate with the help of another gate opener Opens gate 90 degrees in approximately 18 seconds with a 75 percent duty cycle Operates gates up to 600 pounds and 9 feet in length, up to a maximum of 15 feet