The reason these codes exist is a lack of standardization. While most IR remotes use the same carrier frequency (typically 30–56 kHz), the actual data protocols—the 0s and 1s that tell a TV to turn on or change volume—vary wildly between manufacturers. A universal remote doesn’t "learn" these commands on its own; instead, it contains a library of pre-stored protocols. The code list tells the remote which protocol to activate.
: Check under the batteries or on the cover for a sticker listing the remote's model and code version.
The reason these codes exist is a lack of standardization. While most IR remotes use the same carrier frequency (typically 30–56 kHz), the actual data protocols—the 0s and 1s that tell a TV to turn on or change volume—vary wildly between manufacturers. A universal remote doesn’t "learn" these commands on its own; instead, it contains a library of pre-stored protocols. The code list tells the remote which protocol to activate.
: Check under the batteries or on the cover for a sticker listing the remote's model and code version. universal remote code list