Compatibility: Compatible with models GT4, GTI2, GTI4, GTI2N, GTI4N, GTI2M, GTI4M, and GENIE models 273, 273L. Also works with TR2, TR4, TR2N, TR4N garage door openers Advanced Security: Features 433.92MHz rolling code technology to help prevent unauthorized access by ensuring the signal changes with each use Durable and Reliable: Designed to perform in various weather conditions for long-lasting reliability Easy Programming: Simple setup process allows for quick synchronization with compatible garage door opener systems Name: Remote Control Applicable: Series Remote Control Color: As shown in picture Material: Plastic Package Contents: 5 x 2-Key Remote Control 5 x 4-Key Remote Control Note: Package includes only the items listed above. Other accessories are not included. Lighting and monitor settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.