Product Specifications: This replacement garage door remote operates at a frequency of 26.995 MHz. Please verify compatibility with your existing system before purchase. The remote has a compact design, making it portable and suitable for attaching to keychains or backpacks. Working voltage: 12V Working current: less than or equal to 27mA Compatible with models: HS1, HS2, HS4 26.995 MHz HSE2 26.995 MHz HSM2, HSM4 26.995 MHz HSP4, HSP4-C 26.995 MHz HSD2-A, HSD2-C 26.995 MHz HSZ1, HSZ2 26.995 MHz Color: Gray Black Material: Plastic Package Contents: 2 x Garage door remote control Only the items listed above are included; other products are not included. Note: Light reflection and different display settings may cause slight variations in the color of the item as shown in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm.