Package Content: You will receive 4 pieces of RB741 FM135 remote controls for GTO door openers. The remotes come with built-in instructions, sun visor clip, and include a 12V 23A battery, ready for immediate use and convenient operation.Compatibility List: The RB741 FM135 remote control is compatible with GTO door openers such as models 350500502, MM260, MM271, MM360, MM371W, MM372W, MM560, MM562, MM571W, MM572W, MM600, and MM660, featuring 9 DIP switches with 3 positions and operating at a frequency of 318MHz.Easy to Program and Carry: Simple to operate and program, allowing you to set your own code quickly. Designed with high safety and reliability, compact size, lightweight, and easy to carry.Supported Models: 350, 500, 502, MM260, MM271, MM360, MM371W, MM372W, MM560, MM562, MM571W, MM572W, MM600, MM660, and other models with 9 three-position DIP switches.Safe and Reliable: Upgraded with the latest RF technology and enhanced security encryption, providing improved signal range and reduced interference. Offers stable operation up to 100 feet. Designed for reliable performance with GTO door openers.Color: Black Material: Plastic Package Contents: 4 x Gate Opener Remote Control Note: Light reflection and differences in display screens may cause slight variations in color compared to the actual item. Measurement allows an error of +/- 1-3 cm.