black box LS900PKA 
型号：LS900PKA 
产品描述:LongSpan Wireless Ethernet Extender, Integrated Radio and Directional Antenna (2-Unit Kit), Point-to-Point
Further Details
 LongSpan 900-MHz Wireless Ethernet Extenders provide a great way to extend an Ethernet network where installing cable is impractical or prohibitively expensive, and Wi-Fi is ineffective.

Because LongSpan covers very long distances, it can provide a link where ordinary 802.11a/b/g wireless can't go. Outdoors, it has a range of up to 40 miles line of sight or up to 1500 feet through trees. Indoors, it will penetrate up to 10 building walls.

LongSpan is ideal for a wide range of application uch as:
Providing links to far-flung security cameras or door-access controls.
Linking to VoIP phones in remote location  uch as security station.
Linking interbuilding networks in a very large installation or in a rural setting such as a park.
Linking to distant sensors and controls, such as a weather station.
Extending the reach of an 802.11 wireless network across a large facility such as an airport or a military base.