How to measure humidity?

Product Description

Hygrometer, Humidity, Moisture, Measurement

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Temperature and Humidity Station with 3 Indoor/Outdoor Sensors

SIMPLE OPERATION. Operate using 2 buttons only. Temperature reads in °C/°F. It responds quickly and shuts down automatically when not in use.

Handheld Digital Humidity & Temperature Meter 0~100% RH/ -30~70°C (-22~158°F) LCD Display Backlight Moisture Thermo Hygrometer Thermometer Small