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.