Comparing the installation of a city lighting fixture is complicated: In the city lighting project, there are complicated operating procedures. The first step is to lay cables. Here, we need to carry out a large number of basic projects such as excavation of cable trenches, laying of dark pipes, pipe threading, and backfilling. Then, after a long time of installation and debugging, if there is a problem with any of the lines, a large area of ​​rework is required. Moreover, the terrain and line requirements are complex, and labor and auxiliary materials are expensive. Solar lighting is easy to install: When solar lighting is installed, there is no need to lay complicated lines. Just make a cement base and then fix it with stainless steel screws.
Comparing the electricity costs of the two city electric lighting fixtures, there is a fixed high electricity tariff in the city lighting fixtures, and maintenance and replacement of the lines and other configurations are required for a long period of time. The maintenance costs are increasing year by year. Solar lighting fixtures are free of electricity: solar lighting fixtures are a one-time investment, without any maintenance costs, three years to recover the investment costs, long-term benefit.
Comparing the three city electric lighting lamps have potential safety hazards: The mains lighting fixtures have brought a number of safety hazards due to the construction quality, renovation of landscape projects, aging of materials, abnormal power supply, and conflict of water and electricity pipelines.
There is no safety risk for solar lighting: solar lamps are ultra-low voltage products and are safe and reliable to operate. Other advantages of solar lighting: Green and environmental protection, which can add new selling points for the development and promotion of noble ecological communities; it can continuously reduce the cost of property management and reduce the cost of owners' public apportionment.
To sum up, solar lighting is safe and has no hidden dangers, energy-saving and non-consumption, environmental protection, easy installation, and automatic control and maintenance-free features, which will directly bring obvious results for the sale of real estate and the construction of municipal projects.
What is a wireless AC controller? What does it do?
Wireless AC controller is a kind of network device, such as the AC100/150 of Fengrunda, which can be used to centrally control and manage wireless aps. It is the core of a wireless network and is responsible for managing all wireless aps in the wireless network. AP management includes: delivering configuration, modifying related configuration parameters, RF intelligent management, and access security control.
Why use a wireless controller, and what exactly does it do?
In fact, the role of the wireless controller is to play a gateway function between the WLAN and the Internet (on the router), and the data from different access points are aggregated and accessed to the Internet. The role of an access point (AP) is to complete wireless access, and it can control user access through network flags.
The role of wireless controllers
1, Flexible networking mode and excellent scalability
The AP does not need to be directly connected to the AC, so that the AP can be deployed in any place that needs to be covered through the network, such as you deploy an AP in each employee's home, and then connect to the wireless controller inside the enterprise through the VPN, you can expand the wireless network of the enterprise to the family of each enterprise member.
2, intelligent RF management functions, automatic deployment and fault recovery
Through the dedicated RF management module, we can initially estimate the AP deployment according to the user's architectural design drawing, and can calculate the average bandwidth of the wireless terminal, the coverage between AP and AP in the actual debugging process.
3. Centralized network management
All the configuration of the wireless network can be completed by configuring the wireless controller. For example, enable, manage, and maintain all AP devices and mobile terminals, including all functions such as radio wave spectrum, wireless security, access authentication, mobile roaming, and access users.
4, powerful roaming function support
The wireless controller uses AP as the boundary combined with fast RF management system, which greatly reduces the connection time between wireless client and AP, and thus realizes the function of fast roaming.
5. Load balancing
AP and wireless controller systems can distribute wireless users or terminals to nearby aps within the coverage area of an AP, ensuring the number of each wireless terminal or the sum of AP bandwidth transmission or the upper limit of each wireless terminal bandwidth.
6, wireless terminal positioning, rapid fault location and intrusion detection
Wireless controllers can track and locate the location of wireless terminals, such as wirelessly connected computers, PDAs and Wi-Fi mobile phones.
7, powerful access and security policy control
At present, the wireless system supports authentication of 802.1, WEB authentication, MAC, SSID, VPN, etc., and supports various encryption modes such as WEP, WPA, WPA-PSK, WPA2, etc., and all configurations can be configured globally through the wireless controller.
8, Qos support
AP and wireless switching systems can limit the maximum bandwidth of a user's wireless connection within each user's privileges. For different IP services, the system can also define different QoS queues through the wireless switch module. For example, for wireless voice applications, SIP and RTP protocols can be set in the high queue, while common applications such as http and ftp can be set in the low queue.
The wireless controller AC is more advanced than the AP, plays the role of manager in the wireless network, and the wireless controller AC also acts as a client to complete a series of functions in the wired network (such as authentication, authentication, etc.). However, wireless controller AC is not a WLAN device specified in the 802.11 protocol family, but as a supplement to the protocol in specific applications, and its price far exceeds that of ordinary access point (AP) devices.
In small-scale wireless networks that use only a few aps, it is not economical to use expensive wireless controller AC equipment. However, if the number of wireless aps is large, more than 20 can be used AC controller.
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Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommtech.com