The phrase refers to a device manufactured by Hrmann, designed for the wireless operation of garage doors. This electronic component transmits a coded signal to a receiver unit connected to the garage door opener, initiating the opening or closing sequence. These devices typically operate on radio frequencies and utilize encryption technology to prevent unauthorized access.
These control units provide convenience and security for homeowners. Their use eliminates the need for manual operation of the garage door, offering ease of access, particularly in inclement weather. Historically, early garage door openers relied on simple radio frequencies, making them vulnerable to code theft. Modern iterations incorporate rolling codes and advanced encryption methods, enhancing security and minimizing the risk of unauthorized operation.