Digital Humidity Thermometer เครื่องวัดอุณหภูมิ ความชื้น เทอร์โมมิเตอร์ AR837

Product Name: Digital ThermometerModel: AR837Product FeaturesWhen there is a lot of water vapor in the air when we say that 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 can use a towel to absorb water. But in fact the towel can actually absorb more water than a cup. Perhaps he can absorb five to ten cups of water. Part of the quantity of water vapor and some of the water vapor in the air can only have, so the 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. Technical Parameters Temperature range -10 ℃ ~ 50 ℃ Humidity Range 5% RH ~ 99% RH Temperature measurement error ± 1 ℃ Humidity measurement error ± 3% (30 ~ 99%) ± 5% (5% ~ 30%) ℃ / ℉ unit conversionHave Automatic shutdownHave Low battery indication functionHave Resolution0.1 ℃ / 0.1% RH Max / MinHave External thermocouple--- Signal output--- External power supplyHave Packing Power supply9V DC battery NW194g Size207 * 70 * 29mm PackingPackaged