Freeway wireless monitoring, wireless monitoring tunnels, railway wireless monitoring, wireless train ..

Description: ST5801 meet the IEEE 802.11a standard. 1-108Mbps provides data transfer rates, and be LAN or Internet network access can not be applied to a wired network expansion or coverage of business, school, or in remote areas. We can provide "point" and "multipoint" connections. To obtain further protection, wireless monitoring device and Ethernet Bridge adapters have lightning protection. Data transmission optional --IEEE 802.11a, IEEE 802.11a turbo. Under IEEE 802.11a mode, supports data transfer 6-54Mbps, in IEEE 802.11a turbo mode, supports data transfer rates 12-108Mbps In the security settings, we offer two modes, one is "shared key" the other is "exclusive key." ST5801A applied to large-scale backbone transmission Wireless Wireless monitoring equipment, IP68 rated, operating temperature -30oC ~ 70oC. Actual wireless monitoring project application is 32 km away from the internal design of the automatic monitoring network run watchdog, can automatically handle network events, the network will not storm off the network because the network. Built-in support multicast video transmission capabilities to support tree branch processing agreement, avoid network loops, supports 1:00 to 16:00 transmission. SDRAM memory 32M Byte FLASH memory 16M Byte Frequency range: 5.15 ~ 5.35GHz 5.5 ~ 5.7GHz 5.725 ~ 5.85GHz output power 200mw 25dBm standard protocol IEEE 802.11a IEEE802.3 IEEE 802.3u Modulation Direct Sequence Spread Spectrum (DSSS) OFDM working channel 9 non-covered channel rate Bandwidth 108 (Turbo mode) / 54/48/36/24/18/12 / 6Mbps adaptive RJ45 interface type RJ45 Ethernet channel interfaces, 8-pin connector waterproofing type N-type antenna connector male head reception Sensitivity 6Mbps: -88dBm 9Mbps: -87dBm 12Mbps: -86dBm 18Mbps: -84dBm 24Mbps: -81dBm 36Mbps: -76dBm 48Mbps: -72dBm 54Mbps: -68dBm 108Mbps: -64dBm system security support data encryption transmission WEB 152 Bit / 128 / 64-bit encryption Dimensions 320mm × 320mm × 55mm OS Windows 2000 / XP Power Adapter DC 48V + 5%; current 1.37A (Max); AC input voltage 100V ~ 240V; frequency 50 ~ 60Hz product warranty period of one year temperature - this section wireless monitoring devices work properly bridge temperature range: -40 ° C- 55 ° C. If the temperature is outside this range may cause wireless bridge does not work properly. Winds - wireless bridge work this paragraph wind speed ranges: 0-90MPH, wind up to 125MPH also resistant too. Therefore, you must consider the known maximum wind and wind direction point of installation, and the installation point to have such: pole, column or the tower like the mounting bracket. Lightning - This section wireless bridge product includes built-in lightning protection devices, but you must ensure that equipment, mounting bracket, cables are fully grounded. Transmission range - this subsection applies to the transmission range of wireless bridge long distances in the basic data mode, the transmission range of 0-28 km, in Turbo mode, the transmission range of 0-14 kilometers. Rain - This section features wireless bridge have rain, prolonged heavy rains also did not affect the quality of the transmitted signal. But you may need to use an Ethernet interface sealing tape, once moisture into the interface will reduce the performance of the product does not work and even the bridge. Wireless monitoring equipment products and accessories ST5801A master / slave bridge CAT5 / 25M-RJ45 (PoE Cable) DC power supply / RJ45 (RJ45DI-48) N-Type to N-Type RG-400 / 1.5M Cable AC / DC power line ( DC48V 1.37A) a typical application case: 12-point digital wireless monitoring program Project Description: This project consists of 12 wireless surveillance equipment ball machine, due to the distance, wired the way is very difficult, and the cost and very high. The actual environment, the front-end point to the center is in a state of non-visual, and distance are more than 15km, there is the furthest 22km, and good high-frequency signal transmission characteristics must also accessibility. According to site investigation, we chose the middle of one of the highest buildings, the tip of each point can be seen this building, while monitoring center can also see this building. So we choose this point as an ideal wireless relay points. After the front of the camera we used ST8301F integrate transmitted via 5.8G digital wireless devices to the tallest building,