RS232 and RS485 have always been common weak current interfaces, but many people do not fully understand the differences between RS232 and RS485. Today, this article will explain to you the characteristics and differences of RS232 and RS485. 1. Overview of RS232 The RS-232 interface

In recent years, as illegal activities have developed from “traditional” to “technical”, “Internet +” illegal activities have brought new challenges to community security. Traditional public security prevention and control methods can no longer adapt to the development requirements of the information age. With the development

The raging concept of the Internet of Things is gradually replacing the Internet as the current focus of attention. Relevant organizations predict that by 2020, the number of installed Internet of Things devices will reach 28.1 billion units, and a highly personalized and interactive Internet

Since the Ministry of Industry and Information Technology issued the “Notice on Comprehensively Promoting the Construction and Development of the Mobile Internet of Things (NB-IoT)” in 2017, the three major communication operators, China Mobile, China Telecom, and China Unicom, have fully launched the construction of

In today’s era, the Internet of Things has become an important part of the new generation of information technology. In this information age, the Internet of Everything is an important stage, especially in the industrial field, where Internet of Things technology is in full swing.

Everyone knows that firefighters have a profound impression of being “retrograde”. Wherever they are, they are usually the scene of fire fighting, flood fighting, emergency rescue, and rescuing people. Everyone has heard of the “Internet of Things”. Although it is not as down-to-earth as firefighters,

M2M (Machine to Machine) is a machine-to-machine communication technology. In a broad sense, M2M (Man to Machine), the Internet of Things is to connect objects (including machines) together. Obviously, M2M is an important part of the Internet of Things connecting objects. Without M2M technology, it

As parking difficulties gradually affect people’s daily lives, many car owners hope that their cars can be parked in parking lots that do not make them worry and are convenient for parking and access. With the gradual application of smart parking systems in the security

Narrow Band Internet of Things (NB-IoT) has become an important branch of the Internet of Everything. NB-IoT is built on a cellular network and only consumes about 180KHz bandwidth. It can be directly deployed on GSM network, UMTS network or LTE network to reduce deployment

The disruptive technology of IoT is penetrating various industries and connecting every internet-enabled device around us. According to surveys, 31 billion connected devices are expected to be in use by 2020. The power of the Internet of Things has transcended computers and smartphones. Every “smart”

The new 5G IoT technology will not completely replace 4G IoT, and the latter will not be completely withdrawn from the network like 2G in the short term. It is a long-term process for new technologies to become standards from discussion to implementation. Before that,

Over the past decade, numerous natural disasters have occurred around the world, with developing countries being the main victims, especially in areas with dense populations and weak emergency infrastructure. The occurrence of catastrophic events often results in severe property damage and threatens the lives of