Standard agreement IEEE 802.11a/n; IEEE802.3; IEEE802.3u chip Atheros AR7240+ AR9280 SDRAM memory 32 M Byte Flash memory 8 M Byte Network Interface 10/100 Base-T RJ45 Interface Modulation BPSK/QPSK/16QAM/64QAM(OFDM) Transmission rate - 802.11a: 6Mbps/9Mbps/12Mbps/18Mbps/24Mbps/36Mbps/48Mbps/54Mbps (OFDM) - 802.11n: 15 Mbps/30 Mbps/45 Mbps/60 Mbps/90 Mbps/120 Mbps/135 Mbps/150 Mbps (MIMO 20MHz) 30 Mbps/60 Mbps/90 Mbps/120 Mbps/180 Mbps/240 Mbps/270 Mbps/300 Mbps (MIMO 40MHz) 20-MHz Bandwidth: MCS 0~15 Supports Data Speed 40-MHz bandwidth: MCS 0~15 support data speed frequency 5.15~5.35 GHz 5.47~5.7 GHz 5.745~5.825 GHz Transmission power Up to 29 ± 2 dBm Receiver sensitivity -92dBm @ 11Mbps, -73dBm @ 54Mbps, -73/-69dBm @ HT20/HT40 MCS15 Safety - 64-bit/128-bit/152-bit WEP encryption - WPA/WPA2 (-PSK using TKIP or AES) WPA/WPA2 (-EAP using TKIP); - 802.1x Authenticator; Hide SSID in beacons Antenna gain Built-in 18dBi antenna or external high gain antenna Operating mode Operation Mode – AP/ Client Bridge/ WDS Bridge PtP and PtMP (up to 8 links) Channel Selection (Setting varies by Country) Software and firmware support Support DHCP Server / Client Support hidden SSID Support site isolation Support Spanning Tree Protocol Spanning Tree settings Wireless access via MAC filtering (up to 50 supported) Web-based access configuration supports popular browsers (MS IE, Netscape...) Network configuration and upgrades can be operated through the web interface Support VPN pass-through (PPTP, L2TP, IPSEC) Support system log settings Support SNMP v1/v2c Support MIB: MIB I, MIB II (RFC-1213) and Private MIB Long distance transmission: 1~30 Km (ACK timeout) Supports channel bandwidth 20 or 20/40 MHz automatically selected Support Ping function and Trace Route function Support QoS (WMM) working environment Working environment: -30 ~ +70°C, working humidity: 10~90%; Operating Storage Environment: -40 ~ +70°C, Storage Humidity: 10~90% Operating system support Windows 2000/XP/Vista Home Basic/Windows 7 Electric scooters are a new type of transportation commuting tool. With the infiltration and implementation of the concept of "low carbon, environmental protection, and green travel" by the international community, electric scooters have emerged as the times require. People enjoy the convenience it brings, short walks, and travel to work. , Electric scooters are becoming an indispensable way for people to travel. Electric Scooters,Electric Scooters For Adults,Electric Scooters For Kids,Electric Scooters With Seats Shenzhen Qingmai Bicycle Co.,Ltd , https://www.qmwheel.com
The rapid development of computer network communication technology, image compression processing technology, and wireless transmission technology enables the security technology prevention industry to adopt the latest communication and image/voice processing technologies, and construct a flexible network to transmit digital images and control images for local implementation. Remote image monitoring and networked alarm systems provide a highly effective and affordable solution.
In the banking, communications, power, metallurgy, oil fields, and large-scale integrated office buildings, residential areas and elevators and other key departments and units, places, the establishment of networking systems and the adoption of network equipment and technological means to improve the level of network design, but also These departments and units have become representatives of advanced productivity and management.
Digital microwave wireless transmission equipment introduction
Appearance 
Product Introduction SF5040G series digital wireless bridge is a long-distance outdoor wireless bridge with high cost performance. It works in 5GHz frequency band and adopts 2×2 MIMO technology. The maximum bandwidth is up to 300Mbps. The user interface is graphical and supports Chinese and English interfaces, facilitating the debugging and installation of engineering technicians at home and abroad. SF5040G built-in 18dBi dual-polarized flat antenna, high gain, large angle, transmission bandwidth up to 70~80Mbps at 6km distance. SF5040G-W is an external antenna device. In the application, an appropriate antenna can be added as required, and the transmission distance can be as long as 15km or more. In the bridge mode, point-to-multipoint supports 1-to-8 transfers, and the master can write 8 MAC addresses. Practical applications can be point-to-point, point-to-multipoint combinations. Its electrical interface is RJ45 interface, which mainly transmits TCP/IP network data flow, so it can transmit all signals based on network transmission in use: multimedia network data flow such as video, audio, and control.
SF5040G series products have a wide range of applications for information transmission between enterprises in various occasions - network connection between large enterprises and factories, office buildings, due to the expansion of the site requires the addition of factory warehouses, these buildings The cross-over is relatively large and inconvenient to route or require a lot of coordination work, where the transmission of high-bandwidth wireless information can quickly solve these problems.
Hard-to-wire environment - In many cases, wired lines are difficult to build, such as: long-established buildings, old buildings, open areas, busy streets, large-scale construction sites, mines, tunnels In areas such as mountainous areas, uninhabited areas, rivers, scenic spots, oil fields, etc., it is not convenient to wire, but it is also very necessary to transmit network signals, monitoring signals, or other multimedia signals.
Temporary workplaces—Offices, monitoring, and information transfer of temporary workplaces such as large-scale event venues, convention centers, construction sites, and disaster relief sites.
Frequent changes to the location of the environment - such as * sites for demand monitoring, such as * drills, construction sites, roads and bridges construction, etc., and frequent changes in location, using wireless forms to facilitate re-use without wasting the extension of the cable network - due to With regard to cost issues or actual environmental conditions, areas where the wired network is not laid or cannot be laid can be transmitted wirelessly.
For the backup of the wired network - For some important places, for the purpose of dual insurance, the link can be backed up in a wireless manner. Once a link is broken, the other link can immediately function.
The main parameters
4.2 On-site situation and overall layout of the wireless system Design: 9 sets of high-definition cameras, transmission distance of 6 kilometers unimpeded environment, require each camera must be stored locally, and transmitted to the monitoring center through the wireless device, the last 9-channel image on the video wall. 
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Today's rapid development of science and technology, the use of high-tech security communications to prevent and stop possible events, has become a powerful measure to protect the life and property safety of all units and employees, and ensure the normal operation of the various departments and units within the unit. It is a consensus that "science and technology should be safe."
Specific transmission process please see the topology