The main purpose of machine-to-machine technology is to make use of sensor data and transfer it to the network. Unlike SCADA or other remote monitoring tools, IoT systems typically use public networks and access methods (such as cellular network or Ethernet) to make them more cost-effective.}

In order to seek the centralized operation of network facilities, overcome the distance limitation of standard serial communication, and reduce the cost related to manual management of these devices, the way of serial to Ethernet converters with virtual serial port software provides obvious advantages.}

For emergency patients, time is life! Take acute myocardial infarction patients as an example - the best treatment time is 4 minutes; over 8 minutes, the patient's heart will suffer irreversible damage. If delayed any longer, it will result in a large area of myocardial necrosis, which can lead to heart failure and even sudden death.}

Serial communication technology refers to a mode of communication in which both sides of communication proceed in bitwise and follow the time sequence. In serial communication, the data is transmitted in sequence by bit, and each bit takes up a fixed time length. }

Industrial routers generally require more stability than civilian wireless routers on the market, and more adaptablity to continuous work under harsh weather conditions, and at the same time the cost is higher. }

Users can communicate with the Internet by setting up a default gateway on a PC or network device. In fact, the default gateway set up on network devices is the exit of network devices' packets.}

How the industrial router works? An industrial router is a network device that connects multiple networks or segments. Industrial router can "translate" the data information between different networks or segments so that they can "read" each other's data, thus forming a larger network. }

PPPoE (Point-to-Point Protocol Over Ethernet) is a network tunnel protocol which encapsulates the point-to-point protocol (PPP) in the Ethernet framework. Due to the integration of PPP protocol in the protocol, it realizes the authentication, encryption and compression functions that traditional Ethernet cannot provide.}

Metro has become an effective way of human using underground space, which can cut down on traffic congestion. And metro has the advantages of large passenger capacity, good punctuality, fast and safe, high traffic efficiency, and environmental protection, etc. }