Price of installing access control in Dongcheng District

Access control lock installation in Dongcheng District Access control installation system Access control lock installation in Fengtai District Access control lock installation in Haidian District Sliding door installation in Fengtai District Sliding door installation in Dongcheng District Sliding door maintenance Access control lock Fingerprint access control installation Chaoyang District maintenance Access control lock installation Security monitoring system Fengtai District installation access control lock Swipe card access control System maintenance, installation of access control locks in Shunyi District, professional combination lock installation and installation of access control electric plug locks, maintenance of access control locks in Tongzhou District, installation and maintenance of access control locks in Shijingshan District, access control systems are divided into two types, bus and network type. Bus-type access control controllers are divided into single-door, double-door, and four-door access control controllers that are directly connected to the serial port of the access control server through the bus. The front-end buttons, electromagnetic locks (electric plug locks), card readers, and door magnets are connected to the access control controller. The network type is divided into two ways. The network access control controller such as single door and double door is connected to the access control server through the network. The front-end button, electromagnetic lock (electric plug lock), card reader and door sensor are first connected to the access control controller and then connected to the access control server. Connect the network access control controller to the access control server through the network. The number of doors that the access control controller can access and the number of access control controllers that the network access control controller can access depend on the site conditions. The following introduces the introduction and installation methods of door magnets, various locks, buttons, card readers, explosion-proof access control, and access control controllers. Since there are many access control manufacturers, Zan only found some representative products, which have the same principles as other access control .
, Door Sensor
Functions and principles of magnets, application of door sensors in access control systems.
A magnetic sensor is a small sensor used to detect whether the door is closed. There are many electric locks with a door sensor function. It is recommended that if customers use a door sensor in the access control system, it is best to purchase one with a door sensor function ( Electric lock with door status feedback function). If the electric lock does not have a door sensor function, you can choose a door sensor by yourself. The size of the door sensor is slightly larger than a one-yuan coin and the price is about ten yuan.
A common concealed door sensor on the market has a magnet built into the end without a wire, and a reed switch and other components hidden inside the low end with the wire. When the magnet approaches, the wire outputs a closing signal. When the magnet moves away, the two wires output an open circuit signal. The non-wired end is attached to the top of the door, and the wired end is attached to the door frame. When the door is closed, the two ends overlap and approach each other. There are also some door magnets on the market that are square and suitable for surface installation and use on doors and windows.
The main role of magnets in the access control system is the following points
When the software monitors in real time, you can see whether the current status of each door is open or closed.
To cooperate with the access control controller to activate the alarm when the door is illegally broken in (the door is opened without legal operation of swiping the card or pressing the button, such as kicking or prying open).
To cooperate with the access controller to enable the alarm when the door is not closed for a long time.
Note: If you do not need the access control system with these functions, you do not need to connect the door sensor. If you need these functions, just connect the door sensor to the door sensor input point (for example) of the controller without distinguishing between positive and negative. If in a large multi-door access control system, only a few doors use these functions of the door sensor, other door sensor input points (for example) should be short-circuited with wires to avoid false alarm signals