The NOKLEAD indoor thermometer hygrometer with temperature and humidity monitor ensures proper humidity control and maintains a comfortable living space, which is important for your skin, breathing, and other health benefits. Humidity level indicator. The comfort level icon on the screen clearly conveys the home environment, based on relative humidity (RH). Multiple mounting options. The digital room thermometer and hygrometer has a compact and intelligent design, easy to use, and offers a variety of mounting options to suit your different needs. Adjust Normal Mode: '+': switch °C/°F. 12/24H format. Day/hour mode. "SET" button: press and hold in day/hour mode; press again in month/day/hour/minute. +/: up/down, press and hold the button for quick adjustment. Specifications: Temperature range: -9.9 ℃ ~ 60 ℃ (-22 ℉ ~ 144 ℉). Humidity range: 10% ~ 95%. Accuracy: temperature ± 1 ℃, humidity ± 3% RH Update frequency: 10 seconds. Product size (weight): 70 x 70 x 14 mm (65 g). LCD screen size: 3.3 inches. Package contents: 1 temperature and humidity meter. 1 user manual (Spanish language not guaranteed). 1 metal adhesive pad. 2 CR2032 button batteries.