The radio frequency band is divided into multiple intervals according to different frequencies, and each interval has a specific purpose. The allocation of wireless frequency bands in our country follows the relevant regulations of national radio management and is the responsibility of the national radio management agency.

RS485 is half-duplex communication. Half-duplex communication means that the channel can only be receiving or transmitting at a time. RS485 is characterized by supporting multi-node transmission, long transmission distance, and strong anti-interference ability. RS485 can connect multiple 485 devices, and the signal rate can reach 10Mbps.

In modern industrial environments, industrial routers, as key communication devices, bear important responsibilities for data transmission, device interconnection and information sharing. Their coverage directly affects the efficiency and stability of the entire industrial network. Therefore, understanding the coverage of industrial routers and its influencing factors is crucial to improving the level of industrial automation.

​LoRaWAN module is a hardware device that integrates components such as a LoRa modem, a microcontroller, and a radio frequency front end to implement LoRaWAN communication functions. These modules are usually provided by hardware manufacturers and tend to be compatible with the LoRaWAN protocol.

Industrial gateways are indispensable key technology components in modern manufacturing, energy management, smart cities and other fields. They act as a bridge between the physical and digital worlds, enabling the collection, analysis and management of device data. This article aims to provide a comprehensive technical overview around the concept, importance, functions and role of industrial gateways in practical applications.

Serial port servers​ are widely used in industrial automation, power monitoring, telecommunications room monitoring, building automation systems, self-service banking systems and other fields. Serial port servers can provide serial port to Internet, which can convert RS-232, RS-485, RS-422 serial port interfaces into TCP/IP network interfaces, and maintain two-way transparent transmission of statistical data between RS-232, RS-485, RS-422 serial port interfaces and TCP/IP network interfaces. It enables serial port devices to immediately have the function of TCP/IP network interface, network connection to carry out data communication, and greatly expand the communication distance of serial port devices.

In previous articles, we have delved into many aspects of IoT gateways, a detailed review can be found at: [IoT Gateway & FAQ guide]. This time, we will focus on the different classifications of IoT gateways, specifically, the comparative analysis between Zigbee gateways, LoRa gateways and Bluetooth gateways.

IoT gateway is a key component in an IoT architecture that connects, manages, and coordinates communications between various IoT devices and the wider network, such as the Internet or an enterprise network.

Wi-Fi module is a hardware device that integrates Wi-Fi communication functions, usually including Wi-Fi chips, antennas, connection and control circuits. The Definitive guide to Wi-Fi Modules

When it comes to Bluetooth modules and BLE solutions, you may be looking at a range of hardware and software tools to integrate into your project. The following is a definitive guide to help you understand how to select, use and develop Bluetooth modules and BLE solutions.

Zigbee is a wireless communication standard designed for short-range, low-power, and low-data-rate communication in IoT and home automation applications. Zigbee provides a reliable and energy-efficient communication solution for IoT applications.

When you need to transmit data between two networks that are not directly connected, the relay function of the E22 series comes in handy. The relay acts as a bridge, allowing distant devices to communicate without hindrance. This guide is designed to simplify the trunk configuration process so that you can easily set up E22 series devices.

Bluetooth module is a hardware device that integrates Bluetooth communication functions, usually including a Bluetooth chip, antenna, radio frequency (RF) circuit and some support circuits.

This case mainly explains the wiring method of E860-DTU (8080-400SL) (hereinafter referred to as synchronous switch) product and the use of simple simulated 1-to-1 mode communication

E49-900M20S is a cost-effective wireless data transmission module launched by Chengdu Ebyte. It is A pure hardware module based on CMT2300A. E49-900M20S Supports the maximum transmission power of 20dBm,users can set a lower output power , thus saving power consumption.The module works in the 850MHz ~ 930MHz frequency band, including the commonly used 868MHz and 915MHz frequency band.Since this module is a pure RF transceiver module, using SPI interface, needs MCU driver.