code: function RFID(board) {
      Module.call(this);
  
      this._board = board;
      this._isReading = false;
      this._enterHandlers = [];
      this._leaveHandlers = [];
  
      this._messageHandler = onMessage.bind(this);
      this._board.on(BoardEvent.BEFOREDISCONNECT, this.destroy.bind(this));
      this._board.on(BoardEvent.ERROR, this.destroy.bind(this));
      this._board.send([0xf0, 0x04, 0x0f, 0x00, 0xf7]);
    }
docs: The RFID class.
  
  RFID reader is used to track nearby tags by wirelessly reading a tag's unique ID.
  
  @namespace webduino.module
  @class RFID
  @constructor
  @param {webduino.Board} board Board that the RFID is attached to.
  @extends webduino.Module