If you hear thunder, forget counting... Its already too late!
Thunderstorms and deadly lightning can suddenly come out of nowhere, catching you off guard and unprepared. The fact is, when you hear thunder, you're already in range of a lightning strike. These lightning detectors will warn you to take shelter long before you're in danger! Lightning detectors are not weather alert radios, the lightning detection system is a self-contained device that gathers data independently of any other weather information source.