Bluetooth DMM is a platform product. There will be different product definitions for different users. For surveyors, it is a good helper for auxiliary measurement. For multimeter lovers, it is also a forum for everyone to exchange multimeter experience. For teachers and students, it is also a multimeter knowledge service platform. It has a variety of teaching videos that teachers can also use it realizes on-site practical operation, which is convenient for students to understand.When we first designed this Bluetooth DMM, we simply wanted to design an APP for Bluetooth multimeters to record data, but with the in-depth research of the R & D department, most of the multimeter apps on the market have similar functions. They have some very basic functions such as recording data, importing and exporting data, etc. But at the same time, we also found that only having these basic functions did not develop the value of our Bluetooth multimeters. At that time, we decided to make a platform integrating measurement applications, community communication, and knowledge services. Because we found that what Bluetooth multimeter can do is far beyond our imagination.