Temperature ratings range from –35ºC to 65ºC with humidity up to 99 percent. Each 240U-E unit can be configured as an Access Point/Client, Bridge or Router. This provides flexibility for making full use of the vendor’s 2.4GHz DSSS technology. With wireless data rates up to 11Mb/s, the 240U-E secures data with military grade 128-bit AES encryption, as well as WEP encryption to maintain WiFi compatibility. Firewall protection is provided via message filtering at MAC address level. The 240U-E includes RS232 and RS485 serial port connectivity and a discrete contact I/O channel for alarm transfer. It is powered from a 9-30VDC power supply. For internal installations, the unit has range of about 100 meters through buildings, factory walls and steelwork.