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 and design makes it portable and versatile, suitable for attaching to keychains or backpacks. Working voltage: 12v Working current: less than equal 27mA for 26.995 MHz 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 Colour:Gray Black Material:Plastic Package Contents: 2 x garage door remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.