For test the temperature and humidity in cleanroom, Our factory has independently developedModel TH-40 Handheld Digital Temperature and Humidity Meter, It display the temperature and humidity in digital form.the sensor is from USA MEAS and it with advanced circuit design and structural design, quality stable and reliable, high precision, easy to use . Can be used wildly in electronics, pharmaceuticals, biotechnology, aerospace and other production. It is the ideal instrument for the pharmaceutical enterprise and quality supervision department. Main function 1.Using new semiconductor nm process vultra-low-power32 bit microprocessor. inch IPS color screen, the resolution is 320x240.3.It with Large memory for storing data (16000samples) and can view history data directly. 2.The data can be download to PC via USB line. 3.With printing function (Optional). 4.Allowing the user to freely switch between Degrees Celsius and Fahrenheit. 5.English operation menu, simple and useful. 6.With Over-voltage protection, Overcharge Protection and with function ofresistance of the static, electromagnetic interference. Main parameter