On the Grundig, press the and the LEARN button (if applicable) until the LED flashes.
The remote will begin cycling through codes. When the device responds (e.g., turns off), quickly press or Enter to save the code. Additional Features grundig universal remote control 8 in 1 manual
This is the fastest method if you have the code list booklet that came with your remote. On the Grundig, press the and the LEARN