1.Adaptable2.Automatic Calibration: No battery, built-in temperature and humidity sensor, will automatically sense and accurately measure within 3 hours, you do not need to calibrate3.Easy to Read and Use: The bold black lettering in the outdoor thermometer large numbers makes temperature and humidity readings easier, 4.Multi-scene Application: placed in greenhouses, warehouses, baby rooms, offices, laboratories, balconies, gardens, terraces, etc5.If you have any questions, please feel free to