1Control Handsender WHY is a universal remote control for garage doors. It is compatible with different brands and frequencies. More than 450 rolling codes and fixed code remotes can be programmed. The remote supports AM and FM modulation and features four buttons for storing radio codes.

The 1Control WHY can be used as a replacement or an extension for remote controls with AM or FM modulation in the 433 and 868 MHz frequency range. It supports remotes with fixed codes as well as those with rolling codes. Four different radio codes from other remotes can be programmed onto the four buttons. For each button, the manufacturer and frequency band can be set, allowing codes from different manufacturers and frequency bands to be stored on the four buttons. Programming is done alongside the existing remote, so no changes to the receiver unit are necessary.