With the development of society and the progress of science and technology, Dallas Company of the United States launched the global patent "IBTTON" information button in 1990s. The product has the advantages of durability, acid and alkali resistance, corrosion resistance, high temperature resistance, long service life and so on, and was quickly applied to inspection products.
This method has the advantages of convenient carrying, no wiring, simple installation, no influence of temperature and humidity, and is not easy to be damaged, which solves the problem of expensive investment and makes it easier to realize system expansion and circuit change.