<p> [Air comfort indicator] Temperature, humidity and environmental level icons. Divided into three dry/comfortable/humid levels, it is a good help to adjust temperature and humidity. When the temperature is 18 ℃ ～ 26 ℃ and The humidity is 30%～ 69%, the arrow automatically points to the comfort green icon. When the temperature is 18 ℃ ～ 26 ℃ and the humidity of 30%～ 69%, the arrow automatically points to the comfort green icon </p> <p> [2 Quick detection and detection contacts] The thermometer and the liorque hygrometer update reading every 10 seconds, allowing you to keep up to date with the latest changes in temperature and humidity reading. (The beach temperature measurement is -9 ℃ ~ 60 ℃) </p> <p> [Minimum memory and recording function/maximum] Digital hygrometer can memorize the highest temperature and humidity in 24 hours. It is a good partner to take care of children and the elderly </p> <p> [High precision and conversion ℉/℃] Inner thermometer can obtain rapid and precise data over time when the air flow passes through the vent. And you can switch between fahrenheit and Celsius </p> <p> [Longer battery life] The thermometer and the Liorque interior hygrometer are powered by 2 AAA batteries (including batteries). It is very suitable for use in your baby room, greenhouse, desk or wine cellar </p>