Product Specifications: This replacement garage door remote operates at a frequency of 26.995 MHz. It is important to note that this is a non-aftermarket part. Please verify compatibility with your existing system before purchase. The remote's compact design makes it portable and versatile, suitable for attaching to keychains or backpacks. Working voltage: 12V. Working current: less than or equal to 27mA. Compatible with the following 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 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 vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.