Fluke Networks AirCheck-LE Wi-Fi Tester for Law Enforcement. Detect if the wireless network inside the suspect residence is OPEN or secured. Locate devices that are illegally using a compromised OPEN wireless network. Supports all Wi-Fi standards (802.11a/b/g/n). Identifies security settings for each network and access point: Open, WEP, WPA, WPA2, and/or 802.1x. AirCheck's directional antenna allows users to see signal strength and security settings of wireless networks inside a location.