Moore Industries’ WNM Wireless Network Module provides a low-cost, wireless communications link between field sites that are in rugged or impassable terrain. The modules are designed for long-distance data transmission; 902-928MHz units can transmit up to 30 miles, while 2.4-2.4835GHz units can transmit up to 15 miles. The range can be extended by using multiple WNM units as repeaters to relay signals. This also allows for the creation of WNM networks when a direct line-of-sight cannot be established. The WNM is a good fit for use with the Moore Industries’ NCS NET Concentrator System, as well as other SCADA and distributed I/O systems. WNM models are available for data communications networks that use Ethernet and serial (RS-485) communications. In each WNM network, one module is set as a “master.” This can be set to communicate with a single WNM remote unit in a point-to-point architecture or multiple WNM remote units in a point-to-multipoint architecture. Operating at standard frequencies, the unit does not require a regulatory license and can typically be installed without performing RF site surveys. The WNM can be factory-configured to fit user specifications before being shipped. In addition, free PC configuration software allows end-users to perform on-site configuration, parameter changes and add WNM modules to a network. The module utilizes 128-bit AES (Advanced Encryption Standard) encryption, 32-bit CRC (Cyclic Redundancy Check) error detection, and ARQ (Automatic Resend Query) for robust and secure communications. It has an industrial DIN-rail mount metal enclosure allowing for use in rugged environments, including ambient temperatures from -40 F to 167 F (-40 C to 75 C) and relative humidity of 5 percent to 95 percent. –