At present, with the development of facility agriculture, the monitoring needs of various environments in greenhouses are getting higher and higher. Meteorological environmental monitoring instruments such as carbon dioxide detectors have emerged in this context,.......
Project requirements 
Large/small stadiums are mainly used for sports training, sports events, concerts, lectures, lectures, stage plays, dance competitions, stage per.......
With the release of sales data for November by various car companies, the Chinese auto market's period has become more and more complete in 2017. In the year in which “micro growth†is the main theme, the â€.......
At the 2015 International Consumer Electronics Show (CES) in Las Vegas, USA, smart cars have become the "absolute protagonist" of this year's show without any controversy, including 10 mainstream cars including Audi, Mercedes-Benz and .......
Whether the QR code access control system can support visitor management depends on whether the system has a software background and whether it has management functions. A set of two-dimensional code access control system that can support visitor management, specifi.......