The BW-DG180M foldable portal radioactive substance detector is mainly used to monitor whether pedestrians contain excessive radioactive substances. It has the characteristics of high sensitivity, low detection limit, and fast measurement, and can automatically monitor various channels in real time. Effectively preventing the illegal carrying and spread of radioactive substances, widely used for radioactive monitoring and control at nuclear power plants, customs, airports, and stations.The monitoring system complies with the relevant requirements of the national GBT24246-2009 "Monitoring System for Radioactive Substances and Special Nuclear Materials"....