... kinds of areas measuring and contolling the envoironmental temperature and humidity in meteorology, ministry defense, scientific reseach, post ... 1) KHT-WI/A(B):wall installed/temperature, humidity(power output) and temperature &humidity type 2) KH-WI/A(B):wall ... installed/humidity(current output),only humidity type3) KT-WI/A(B):wall installed/temperature ...