The Stinger 433TSD21V is a handheld, long-range 433 MHz remote transmitter designed for gate operators, garage door openers, and access control receivers that use a fixed code with a 10-position DIP switch. As a replacement or upgrade remote, it allows you to control a compatible system by matching its internal DIP switch pattern to the code set on your existing remote or receiver. Its 433 MHz operation targets systems built around fixed-code radio controls and is commonly used in residential, commercial, and light industrial applications where a dependable, extended-range handheld remote is needed.
This transmitter uses 10 switch coding rather than rolling code “learn” pairing, so programming is done by opening the remote and setting the DIP switches to mirror the receiver’s code—or duplicating the pattern from a working remote. It is intended only for 433 MHz fixed-code receivers with 10-switch compatibility and will not work with rolling code platforms. For best performance, ensure your receiver’s antenna is properly oriented and free of obstructions, and verify that 433 MHz devices are appropriate for your locale. Always keep moving gates and doors in sight when operating and follow applicable safety practices and local regulations.