Kensington WiFi Finder Plus Kensington Edge: WiFi Finder eliminates wasted time and effort booting up laptop or PDA to find hot spots. Convenient one-button wifi detector searches and indicates signal strength if 802.11b or 802.11 b/g network is within range Finds wifi while filtering out other 2.4 Ghz signals from cordless phones, cell phones and microwave ovens Compact wifi finder unit with built-in flashlight fits in hand and attaches easily to laptop carrying case or to keychain 5 LEDs display hotspot wifi network signal strength to correspond with most laptop signal strength meters