Grundig Universal Remote Control 8 In 1 Manual [exclusive] -

Grundig 8-in-1 Universal Remote Control Go to product viewer dialog for this item.

Press and hold the corresponding device button (e.g., TV) for about 3 seconds until the power button light stays on. grundig universal remote control 8 in 1 manual

BATTERY INSTALLATION

Remove the battery compartment cover on the back of the remote.
Insert two new AAA (R03) batteries, ensuring the (+) and (-) markings match the compartment diagram.
Close the cover securely. Note: Do not mix old and new batteries or different battery types. Remove batteries if the remote will not be used for an extended period.

6. Operating the Remote Control

AUX 1 / AUX 2 / AUX 3: Flexible spare channels to assign to soundbars, streaming sticks, or secondary audio systems. Grundig 8-in-1 Universal Remote Control Go to product

How to set Volume to control an Audio device (AMP): Remove the battery compartment cover on the back

The remote control comes with a pre-programmed list of device codes. To find the code for your device, refer to the code list provided with the remote control or visit our website for an updated list.

When the device switches off, release the buttons immediately to save the code.

Check the batteries and replace them if necessary.
Ensure the device is turned on and properly connected.
Check the device code and try re-programming the remote control.