When there is a lot of water vapor in the air, we say the air is humid. Scientists often use to describe the relative humidity in the air how much water vapor. Simply put, that is, imagine the air is a towel if you spilled a glass of water, you use a towel to absorb the water. But in fact actually towel can absorb more than a cup of water. Perhaps he can absorb five to ten cups of water. part of the water and some amount of water vapor is water vapor in the air can have, therefore Relative humidity is a percentage. When the relative humidity is one hundred percent, the air is saturated. like a wet towel to do the same, the air can no longer take water.

General features and specifications

Temperature measurement range	-10℃~50℃
Humidity measuring range	10% RH ~ 99% RH
Temperature measurement error	±1%
Humidity measurement error	±3% (30~95%) /±5% (10~30%)
Temperature resolution	0.1℃
Humidity resolution	0.1% RH
Sampling frequency	2time / sec
Temperature and humidity alarm setting function	√
Maximum / minimum / average test function	√
℃ / ℉ temperature unit conversion	√
Data Hold function	√
Automatic / manual shutdown	√

Package Information

power supply	9V (9F22) battery
Product Weight	194 g
Product Size	207 * 70 * 29mm
Packing	Boxed