Ruth's sister 433 MHz internal power cable

433 MHz remote duplicator

This device copies the signal from an existing 433 MHz garage door remote so a second handset can operate the same opener. It is intended for homeowners or installers who need a spare transmitter without re-pairing the receiver.

Wireless cloning limits

The clone process only works when the original remote uses a compatible fixed or learning code on the 433 MHz band. Encrypted or rolling-code remotes cannot be duplicated, and the duplicator cannot generate a new code for a receiver that has no existing working transmitter.