Enhanced Bluetooth Listening has the following limitations:
Before adding a Bluetooth device, make sure that the device is in pairing mode.
Bluetooth range is typically up to 8-10 metres. The usable range will vary depending on obstacles (person, metal, wall etc.) or electromagnetic environment
Although multiple devices can be paired, you can only connect one Bluetooth device at a time.
If you have paired 2 or more Bluetooth devices with your NetBox 4K device, make sure that only 1 Bluetooth device is on, whilst switching all other Bluetooth devices off. Your NetBox 4K device may connect to the wrong Bluetooth device, if multiple paired devices are switched on.