Only compatible with BLUE BUTTONS 868MHz handheld transmitters. NOT compatible with handheld remotes with GREY or GREEN buttons. This garage door opener is a replacement remote that functions the same as the original. The handheld remote has a compact size, fitting easily in your pocket, bag, or backpack, and includes a built-in key fob for attachment to a key ring. Programming type: Self-copy Number of channels: 2 Frequency: 868.3 MHz Transmission distance: 100m (open space) Compatible models: HSM2 868, HSM4 868, HS1 868, HS2 868, HS4 868, HSE2 868, HSE4 868, HSZ1 868, HSZ2 868, HSP4 868, HSP4-C 868, HSD2-A 868, HSD2-C 868 Note: Installation guide not included. Professional installation is recommended. Please verify compatibility before purchase. Product may vary slightly due to different manufacturing batches, including minor differences in color or design, which do not affect functionality. Color: As shown Material: Plastic Package contents: 1 x Garage door remote control Only the items listed are included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement tolerance: +/- 1-3 cm.