code: function Dht(sensorInfo, options) {
    Sensor.call(this, sensorInfo, options);
    if (sensorInfo.device.address) {
      this.address = sensorInfo.device.address;
    }
    if (sensorInfo.model) {
      this.model = sensorInfo.model;
    } else {
      this.model = (options && options.model === 'dht22') ? 'dht22' : 'dht11';
    }
  }
docs: options.model : dht11(default) or dht22