WTZN 860 Desktop Drug and Explosive detector is a next generation desktop detection system for trace analysis of drugs and explosives and other contraband。With built-in calibration system, there is no need to replace the detection device and calibration regularly, which greatly saves the cost of use。No license for use of radioactive sources is required，It can be widely used in airport, subway, customs, border defense, important meetings and other fields of security check，It can also be used as a material evidence inspection tool for national law enforcement agencies such as public security, armed police, and courts