This BD724 is a high-sensitivity and high-accuracy blackbody temperature calibrator and its real-time temperature readings are within ±0.1°C. Its temperature measurement range is from 30℃ to 40℃ and it has a large effective radiation surface to support long-distance temperature measurement. This calibrator is often used together with temperature measurement devices to eliminate temperature drift and improve the accuracy of temperature measurement. It has a wide range of applications, such as airports, schools&universities, hospitals, shopping malls, offices and other high-traffic temperature measurement places.