WiFi Scanner 3.1 MAS | macOS | 16 mb
Using WiFi Scanner you’ll see nearby wireless access points and their details, including channels, signal levels (RSSI), noise, channel width, and MAC address, signal quality, maximum data rate, encryption, and much more. Also includes upload and download speed testing to quickly measure and analyze WiFi Internet performance problems.
Compatibility: OS X 10.8 or later Mac App Store: https://geo.itunes.apple.com/app/id411680127 
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