code: function SerialDevice(port, settings, Connection) {
  
    // call super class
    Device.call(this, Connection);
  
    this.set('portName', port);
    this.set('settings', settings);
  
    this.set('state', 'close');
  }
docs: SerialDevice represents your physical device.
  Extends Device.
  @param {string} port       The Com Port path or name for Windows.
  @param {Object} settings   The Com Port Settings.
  @param {Object} Connection The constructor function of the connection.