夜上海最新论坛(中国)集团公司

Main classification of weak current system

The weak current system is mainly divided into the following categories: 1. The telephone communication system realizes the communication function of telephone (including three types of fax machines, videophones, etc.); Star topology; Class III (or above) unshielded twisted pair cable is used, and the transmission signal frequency is within the audio range. 2. The computer LAN system is the network foundation to realize office automation and various data transmission; Star topology
Published on: January 5, 2019 Number of hits: 257

Classification of access control system

Wuxi monitoring access control system can be divided into the following three categories according to the way of access identification: 1. Password identification: identify the access authority by verifying whether the password entered is correct. This kind of products can be divided into two types: ordinary type and disordered keyboard type (the number on the keyboard is not fixed and changes automatically from time to time). Ordinary type: advantages: easy operation, no need to carry
Published on: January 5, 2019 Number of hits: 306

Development trend and application of building intercom technology

The technical development trend and application of building intercom After more than 10 years of technical accumulation and development, the current mainstream analog visual intercom system technology has become homogenized and the competition is becoming increasingly fierce. Each manufacturer has gradually accumulated and developed the technology of its next-generation building intercom system. With the gradual progress of TCP/IP technology and wireless digital technology in recent years
Published on: January 5, 2019 Number of hits: 222

Five important technologies of smart home

Smart home has been developing for more than ten years in China. In the early stage, it mainly focused on the research of some independent home subsystems, such as building (visual) intercom system, security alarm system, access control system, three meter copying system, intelligent control system of home appliances, etc. The so-called home safety mainly includes
Published on: January 5, 2019 Number of hits: 176

Difference between white light camera and infrared camera

White light cameras are rarely heard in the domestic market, and are far less accepted and recognized by the public than infrared cameras. Let me introduce the differences between the two. First, starting from the daytime, the infrared camera has some influence on the daytime color because it needs to turn color into black and sense infrared, while the white light camera is white because it is a pure color scheme
Published on: January 5, 2019 Clicks: 313

Wireless WIFI technology

The principle and application of WIFI technology The full name of WiFi is WirelessFidelity. Its biggest advantage is its high transmission speed, which can reach 54Mbps. In addition, its effective distance is also very long. Its main characteristics are: fast speed, high reliability. In open areas, the communication distance can reach 305 meters; In enclosed areas, the communication distance is
Published on: January 5, 2019 Number of hits: 190

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