Ensure that all LM048 adapters have the same firmware version and configuration.
In it’s default configuration the LM048 is in slave mode, and the blue LED will blink approximately once per second. The blue LED will begin to blink faster when it receives a connection request, and enters into pairing mode.
If the pairing procedure is completed successfully and the connection to remote device is established. the blue LED will be steady. Check that the PIN of the LM048 is same as your remote device otherwise the connection will fail.
If your problem persists please contact support.