Here’s a sample review for the Grundig Universal Remote Control 8-in-1 (Manual version). You can use or adapt it depending on your experience.
For non-Grundig devices or if the remote does not work immediately, use one of the following configuration methods: Direct Code Entry Switch on your device (e.g., TV) and aim the remote at it. grundig universal remote control 8 in 1 manual
Pros
Simple/Easy Mode: If only a few buttons work, you may have accidentally activated "Easy Mode," which locks out advanced settings. Deactivate it by following the specific button combination in your manual (often [MUTE] + [EXIT]). Grundig Universal TV Remote Control User Manual Here’s a sample review for the Grundig Universal
Use this if the specific code is unknown. This method cycles through the remote's internal database. your device manually. Press and release the desired device key (e.g., Press and hold button for 3 seconds until the LED lights up permanently. Press POWER Flip the remote over and slide the battery cover down