If you need a rugged wireless access point device for challenging RF environments (such as warehouses, factories, large establishments etc) then the Cisco Aironet 1240 AG series is the ideal product for your situation.
This device takes into account antenna support versatility as well as environment/physical security (broad range of operating temperatures and secure mounting bracket).
The 1240AG supports the 802.11 a/b/g wi-fi standards but comes also as 802.11g single band version to be used in environments that do not allow the 5 Ghz operation of 802.11a band.
Antenna support features diversity antenna connectors for both 2.4 and 5 GHz bands to provide extended range, coverage versatility, and more flexible installation options.
The RF performance of 1240AG offers industry-leading transmit power, receive sensitivity, and delay spread for high-multipath environments in order to provide reliable performance and throughput under the most challenging RF environments.