The Stinger 300MCD21V is a Linear Multi-Code compatible remote designed for operating garage door openers and automated gate systems. Built as a two-button visor transmitter, it allows you to control two separate operators or receivers from a single remote, making it a convenient replacement or upgrade for homes, communities, and light commercial applications that use the Multi-Code radio format. It is intended for use with compatible Linear Multi-Code 300 MHz receivers and operators, offering dependable one-press access for day-to-day entry.
Operating on the 300 MHz Multi-Code protocol, this transmitter uses fixed-code DIP switch programming for quick setup. To program, open the remote’s case and match the internal DIP switch pattern to the corresponding receiver or an existing working transmitter; each button can be set to a different code if desired. The 300MCD21V works only with Multi-Code style 300 MHz systems and is not compatible with rolling code or other frequencies such as 310 MHz used by different brands and technologies. Typical use includes residential garage door openers and gate operators that accept Linear Multi-Code 300 MHz signals. For safe operation, use only with operators equipped with proper entrapment protection and photo-eyes, and ensure the remote is programmed and tested within the intended operating range before daily use.