Smart Replacement: This efficient garage door opener is designed to replace 433.92 MHz remotes, not an original product. Universal Compatibility: Compatible with handheld transmitters RSC2, RSE2, Liftronic500/700/800. Not compatible with Liftronic 700 Series 2, Liftronic 800 Series 2, or BS Series (RSC4-433-BS, RSZ1-433-BS). Convenient Two-Button Programming: This 2-button remote control is user-friendly and easy to program, providing seamless and secure access to your garage. Perfect Dimensions for Portability: Compact design sized at 66 mm x 30 mm x 14 mm, making it easy to carry in a pocket or attach to a keychain. Color: Black Material: Plastic Package Contents: 2 x Garage Door Opener Remote Note: The actual product may vary slightly in color, which does not affect functionality. Lighting and display differences may cause slight variations in the image color compared to the real item. Measurement error allowance is +/- 1-3 cm.