1. Compatibility: Compatible with models including GT4, GTI2, GTI4, GTI2N, GTI4N, GTI2M, GTI4M, and GENIE models 273, 273L. Also works with TR2, TR4, TR2N, TR4N garage door openers. 2. Advanced Security: Equipped with 433.92MHz rolling code technology, ensuring that the garage door opener responds only to the remote, enhancing security against unauthorized access. 3. Reliable: Built to withstand weather conditions, ensuring long-lasting performance and reliability. 4. Easy Programming: Simple setup process allows for quick and easy programming with existing garage door systems. 5. Name: Remote Control 6. Applicable: Series Remote Control 7. Note: The product appearance and printed words may vary depending on the batch, but this does not affect use. 8. Color: As Shown 9. Material: Plastic 10. Package Contents: 5 x 2-Key Remote Control, 5 x 4-Key Remote Control. Only the above package content, other products are not included. 11. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.