Netgear Orbi Satellite RBS20: setup and reset
If the Orbi Not Detecting Satellite problem goes on, try resetting the satellite by holding the reset button for ten seconds

Setting up your Netgear Orbi Satellite RBS20 should be rather straightforward! For example, plug-in the satellite and place it near the router. Wait for the white LED light to start blinking, then press the Sync buttons on the satellite and the router to pair the satellite to the router, the pairing completes once the LED goes into a steady-blue light.
If theOrbi Not Detecting Satellite problem goes on, try resetting the satellite by holding the reset button for ten seconds until the indicator starts blinking amber and then releasing the reset button once the indicator starts blinking amber. Installation follows once more.
Keep the satellite in range as reference and also ensure that the latest firmware upgrades are installed. That's seamless coverage enabled by Orbi!