This remote control is specifically designed for handheld transmitters and is only compatible with 40.685 MHz grey button models. It is not suitable for other BS series (BiSecur) colored buttons and remote controls, ensuring precise compatibility and functionality. Perfect replacement for garage door remote controls: fully compatible with handheld transmitter models HSE2-40, HSE4-40, HS2-40, HS4-40, HSM2-40, and HSM4-40. This remote control replaces decayed or lost units without complicated programming. Enhance your access with a 4-channel wireless handheld transmitter that can control up to 4 garage and exterior doors. This feature-rich remote control offers extended control, allowing you to manage multiple access points with a single device. Compact and portable design makes this remote control a perfect addition to your keychain. Its small size makes it easy to carry and does not add bulk. This remote control offers convenience and ease of use, making it an ideal choice for everyday use. Color: Grey Material: Plastic Package Contents: 2x 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.