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What are the classification of access control systems
Jan 15, 2019

Divided by communication method

Off-model
RS485 Network Type
TCP/IP network type


Offline type: Means single-machine control access, is a machine management of a door, can not be controlled by computer software, can not see the record, directly through the controller control. Characterized by cheap prices, simple installation and maintenance, can not view records, not suitable for more than 50 people or frequent movement of personnel (referring to frequent entry and departure), and not suitable for more than 5 of the door works.

RS485 Networking type: Is the type of access control that can communicate with the computer, directly using the software for management, including card and event control. So there is management convenience, control concentration, can view records, analysis and processing of records for other purposes. The characteristics are higher price, installation and maintenance is increased, but the training is simple, can carry out attendance and other value-added services. Suitable for many people, high mobility, Mendo of the project.

TCP/IP network type: Also known as Ethernet Internet access control, but also can be networked access control system, but through the network line to connect computers and controllers. In addition to the full benefits of a 485 access network, it is faster, easier to install, more networked, and can be networked across geographies or across cities. However, there is a high price of equipment, the need for computer network knowledge. Suitable for installation in large projects, many people, speed requirements, cross-regional engineering.
The earliest emergence of networked access control was in the 90 's. With the increasing scope of the application of the forbidden system, people's demand for access control system is no longer limited to a single entrance control, but requires it to have a variety of control functions, such as access control, attendance management, building automation and so on, and the integration of the system and remote control functions have a very clear requirements. However, traditional access control is based on RS485 communication mode, transmission distance and number of nodes are limited, can not achieve remote control and intelligent management. Network access control based on Ethernet transmission comes into being, which not only solves the problem of long-distance transmission, but also makes it possible for more servers and workstations to participate in management, so as to provide customers with multi-level and multi-module access control management.