2.4 GHz, IEEE 802.15.4 Radio Ethernet Gateway Device—The WSN-9791 is an Ethernet gateway for NI wireless sensor network (WSN) devices. The gateway has a 2.4 GHz, IEEE 802.15.4 radio based on ZigBee technology to collect measurement data from the sensor network and a 10/100 Mbits/s Ethernet port to deliver flexible connectivity to a Windows or LabVIEW Real-Time OS host controller. The software included with the WSN-9791 helps you quickly configure your sensor network and extract, analyze, and present your measurement data. The external antenna supports an outdoor range of up to 300 m with line of sight, and it can accommodate eight end nodes in a star topology or up to 36 nodes in a mesh topology.