Great Substitute: This garage door opener is designed to replace rather than supplement for original-accessories. To ensure compatibility, take note of the device models in the list below before making a purchasing decision. It's crucial to verify your remote control's model to avoid any compatibility issues. Broad Compatibility: Our garage remote control is a suitable replacement for Hormann models including HSE2-40, HS4-40, HSM4-40, HSE4-40, HS2-40, HSM2-40. It's an perfect solution for lost or broken remote controls, providing easy accessibility and operation. Exclusively for 40.685MHz Grey Button: This garage remote control is only compatible with Hormann remotes equipped with grey buttons. Please take note that it doesn't work with blue, green, or yellow buttons, as well as for Hormann's BiSecur (BS) series remote controls, hence it's vital to verify your remote's design before purchasing this set. Flexible Programming: The remote has two programming methods: it can be an identical copy of the for original-remote or programmed from the garage door's opener operator or receiver in case an for original-remote is unavailable. This introduces flexibility that accommodates various circumstances. Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you! Colour:Gray Material:Plastic Package Contents: 2 * garage door opener