Package Content: You will receive 4 pieces of RB741 FM135 remote controls, compatible with GTO door openers. Each remote includes built-in instructions, a sun visor clip, and a pre-installed 12V 23A battery, providing everything needed for immediate use and convenient operation. Compatibility List: The RB741 FM135 remote control is designed for GTO door openers with 9 DIP switches, 3 positions, and a working frequency of 318MHz. Compatible models include 350500502, MM260, MM271, MM360, MM371W, MM372W, MM560, MM562, MM571W, MM572W, MM600, and MM660. Easy to Program and Carry: Simple to operate and program, allowing users to easily set their own code. Compact size, lightweight design, and reliable performance make it convenient to carry and use daily. Supported Models: 350, 500, 502, MM260, MM271, MM360, MM371W, MM372W, MM560, MM562, MM571W, MM572W, MM600, MM660, and other models with 9 DIP switches and 3-position configuration. Safe and Reliable: Upgraded with the latest RF technology and enhanced security encryption, this remote offers improved signal transmission and reduced interference. Provides a stable operating range of up to 100 feet, ensuring long-distance reliability and secure access for GTO door openers. Color: Black Material: Plastic Package Contents: 4 x Gate Opener Remote Control Note: The product image may slightly differ from the actual item due to lighting and display variations. Measurement may vary by +/- 1-3 cm.