Bluetooth

Someone can help me. I try to scan an embedded bluetooth device (Bluno from dfrobot) and i only see the paired devices. 

Thanks for help

that's correct, devices must be paired first before you can see them, see also http://ai2.appinventor.mit.edu/reference/components/connectivity.html#BluetoothClient

AddressesAndNames

The addresses and names of paired Bluetooth devices