Set of 3 mini digital indoor thermometers and hygrometers, for precise measurement of indoor humidity.

Reliable & Accurate: Mini thermometer and hygrometer with precise measurements for perfect control. The indoor hygrometer measures (10% ~ 99% RH with a tolerance of +/- 5%) and the small indoor thermometer (-40 ~ +70 ℃ with a tolerance of +/- 1 ℃). Improved Measurement Technology: Thanks to continuous optimization, our digital indoor thermometer and hygrometer is very well calibrated, and measurement errors are avoided. Ready to Use: The thermometer and hygrometer comes pre-equipped with two button cell batteries (1.5V LR44) and is ready to use. It combines accuracy and clarity! Clarity: The humidity and temperature display of the thermometer and hygrometer is easy to read despite the hygrometer's small size (46x47mm). Relative humidity is displayed in RH%, temperature in °C! Flexibility and precision: This indoor thermometer/hygrometer has two clips on the side, allowing for easy installation and use as a built-in device! Universally applicable for measuring room temperature and humidity.