Smart thermometer and hygrometer monitors, displays, records, and reports to the YoLink app the current temperature and humidity level. Features: Temperature and humidity displayed on the YoLink app Intended for indoor use (see our Weatherproof Temperature and Humidity Sensor and Our WP Temperature with Probe Sensor) LCD display shows current temperature (Celsius or Fahrenheit) and current humidity (%) Extended operating range of (plus/minus 3°C and plus/minus 3. Extremely accurate temperature and humidity figures Extremely accurate temperature Self-calibration available via the YoLink app Portable, may be placed anywhere in your home or wall-mounted.