Replacement Remote: This garage door opener remote is a high-quality replacement, not an accessory. It is specifically designed to be compatible with blue button models including HS1, HS2, HS4, HSM2, HSM4, HSE2, HSZ1, HSZ2, HSP4, HSP4-C, HSD2-A, HSD2-C, and HSD2-C. Compatibility Information: Please note that this remote is only compatible with 26.975 MHz devices with blue buttons. It is not suitable for other frequencies, color buttons, BS series, or remote controls from other brands, models, or frequencies. Easy Programming: You can easily program this remote by copying the signal from your existing remote control in a face-to-face manner. Ensure your old remote is functioning to complete this simple setup process. Color: Black Material: Plastic Package Contents: 3 x Garage Door Remote Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.