You no longer have to boot up your notebook or laptop to check for a wireless signal. This keychain scans a radius of 50 meters (165 feet) to detect the presence and strength of wifi 802.11b/g signals. Push the center button and wait a few seconds for the scanning. If no signal is detected, a red light will show. If a single green light shows, there is a weak signal present. If three green lights show, there's a strong signal.

Simple operation: push the central button, wait a few seconds, and the green lights will show a strong or weak signal presence

Detects signals up to 50 meters away (165 feet) outdoors, 30 meters (98 feet) indoors

No need to boot up your notebook to find a signal

Small size is convenient & easy to carry

Dimensions: 60 x 25 x 8mm / 2.3 x .9 x .3in