High compatibility with COOL C2, C4, and B 2/4 models, ensuring a perfect match for your garage gate opener needs. Utilizes 433.92MHz rolling code technology to enhance security by preventing code grabbing and ensuring that your garage remains secure. Built to withstand rigorous use with a robust design that ensures long-term functionality and reliability in all weather conditions. Ergonomic handheld design for easy operation, making it convenient to open your garage door with just a of a button. This product is designed to provide a seamless experience for users of compatible garage gate opener models. Its advanced technology ensures that your garage remains secure while offering durability and reliability for everyday use. The user-friendly design allows for effortless operation, making it an essential tool for any garage. Color: Black Material: plastic Package Contents: 20*Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.