The MM-SL2200B Mighty Mule Automatic Gate Opener is required for dual applications along with the Mighty Mule MM-SL2000B slide gate operator. The operator is designed for gate panels weighing up to 1000 lbs. and up to 30 ft. each in length that allows for a 20 ft. opening. The MM-SL2200B series works perfectly with the MM-SL2000B for heavy duty commercial and residential slide gate applications. Included is a standard safety feature; Internal Friction Brake Lock that locks the gate in the closed position for added safety and security. Also includes an adjustable obstruction sensor, gate sequencing and auto close settings. The Mighty Mule gate opener can be programmed for left to right or right to left openings.