The so-called Bluetooth technology is actually a short-range wireless technology. By using Bluetooth technology, it can effectively simplify communication between mobile communication terminal devices such as handheld computers, laptops, and mobile phones. It can also successfully simplify communication between these devices and the Internet, making data transmission between these modern communication devices and the Internet faster and more efficient, Expand the road for wireless communication. Bluetooth adopts a decentralized network structure and fast frequency hopping and short packet technology, supporting point-to-point and point-to-point multi-point communication, and operates in the global 2.4GHz ISM (industrial, scientific, medical) frequency band. Its data rate is 1Mbps. Adopting a time-division duplex transmission scheme to achieve full duplex transmission.