The communication between the DTU and the server is initiated by the GPRS DTU (client), and the server responds to the DTU by sending back feedback or accepting communication. The DTU end and the server end together form an application system based on GPRS and INTERNET network communication.

DTU equipment belongs to the lower-level computer, and the data center responsible for processing DTU return information is the upper-level computer. The typical application method is that multiple DTUs correspond to one data center. However, the upper computer and the lower computer do not necessarily have a one-to-one correspondence. They can be one lower computer corresponding to one or more up···

The data transfer unit DTU (Data Transfer Unit) is a wireless terminal device specially used to convert serial port data into IP data or convert IP data into serial port data for transmission through a wireless communication network.

RTU has excellent communication capabilities and larger data storage capacity, especially suitable for harsh temperature and humidity environments, and provides more complex calculation functions. RTU is a typical application in the field of environmental monitoring, which can collect, save and transmit field data, and can also realize the functions of remote control, remote signaling, and remote ···

According to the different data transmission methods of DTU, DTU can be divided into 4 types: GPRS DTU, WIFI DTU, CAN DTU, 4G DTU.

Compared with the commonly used programmable controller PLC, RTU usually has excellent communication capabilities and larger storage capacity, is suitable for harsher temperature and humidity environments, and provides more computing functions. RTU products are widely used in SCADA systems in industries such as oil and gas, water conservancy, power dispatch, and municipal dispatch.

wireless CPE is a terminal that directly converts broadband signals or mobile network data of 4G and 5G operators into Wi-Fi signals;

Simply put: AP is to convert a wired network to a wireless network, and CPE is to extend the distance of a wireless network.

CPE (Customer Premise Equipment), literally translated as Customer Premise Equipment, is actually a mobile signal access device that receives mobile signals and forwards them with wireless WIFI signals. CPE is a device that can convert high-speed 4G/5G

What determines the strength of WiFi signal?