The Wireless Survey function lets you run a scan to detect “nearby” (based on signal strength) WiFi networks. The results show SSID name, signal strength, channel, and other network information. This provides crucial details which help you to decide on which channel to run your FreshTomato device's WiFi network(s).
NOTE: While this tool is fully functional, you may find more direct and presentable data using other tools, such as some of the “Wi-Fi scanner” apps available for smartphones. Those apps also provide the advantage of being able to easily move the “scanner” when needed, much more easily than is possible with a fixed router or Access Point.