In 2015, 3G networks matured, 4G networks developed rapidly, and 2G network business volume and utilization ratio continued to decline. Global operators began to gradually shut down 2G networks and promote the evolution of LTE module /M2M module formats to 4G to improve spectrum utilization

my country is a major agricultural country, and the advantages of traditional agriculture in the international market mainly rely on abundant natural resources and low labor costs. With the development of high technologies such as the Internet of Things, my country’s traditional agriculture is accelerating

The system uses 4G data transmission module, DHT11 temperature and humidity collection sensor and STM32 microprocessor to design a data collection and transmission system based on 4G transmission module. The data acquisition terminal collects the temperature and humidity in the environment, connects to the RS485

The international standardization organizations IEEE and IETF are working together to develop a highly reliable, low-power wireless communication protocol stack for the Internet of Things that can access the Internet. IEEE is mainly responsible for formulating standards for the physical layer and link layer of

4g dtu transparent transmission module The 4G DTU transparent transmission module developed by Chengdu Zongheng Intelligent Control is a product that supports two-way transparent transmission. Users do not need to care about complex protocols. The product is two-way transparent transmission and only requires simple configuration.

The development of wireless communication technology so far can be basically summarized into five stages. The first stage: early stage of dedicated mobile communications. It was the first to develop a dedicated mobile communication system in the shortwave frequency band. Its most representative application is

4g module dtu overview: Product model: ZHC401C is a 4G wireless data transmission module based on China Mobile, Telecom, and China Unicom networks, providing a two-way transparent transmission channel. Compatible with Modbus RTU/TCP protocol. With “remote control” as the core function and high ease of

Introduction to 4g router Based on the embedded Linux system, a wireless 4g router that uses WiFi technology to share 4G bandwidth is designed and implemented. The router supports UMTS/GSM/CDMA and TDD/FDD-LTE network standards, achieving compatibility with various 3G/4G network standards. After introducing the design

Introduction: LoRa devices and wireless radio frequency technology are a long-distance, low-power IoT solution that has been widely adopted in recent years. This technology supports telecommunications companies, IoT application developers and system integrators to deploy low-cost and interoperable devices around the world. IoT networks, gateways,

There are two types of wireless data transmission terminals or wireless acquisition systems. The first is used in online laboratories, and the second is equipped with building video surveillance systems in buildings. The first is to use smart grids to build wireless data transmission terminals,

The outstanding features of LoRa technology in terms of high performance, long distance, low power consumption, and support for large-scale networking, ranging and positioning make this solution (terminal LoRa base station) an ideal technology for the large-scale promotion and application of the Internet of Things.

1. Product introduction of plc wireless transmission module GPRS communication is based on the existing communication network of mobile operators and is mainly used for data transmission. The purpose of Zongheng Intelligent Control’s development of PLC wireless communication control module is to enable people who