Since GPRS DTU is mostly used in remote monitoring sites, the stability of GPRS DTU becomes very important. Many users choose GPRS DTU, and it is not enough to finish the selection work only by doing some simple tests in the early stage. If you choose an unstable GPRS DTU and apply it in large quantities, it is tantamount to planting a time bomb for your own monitoring system. So how can you test the stability of GPRS DTU comprehensively and quickly at the beginning? This has become an important topic.