StrikeAlert PAGER lightning detector - SHIPS FREE!

Perfect for an advanced warning to approaching lightning for outdoor sports, work and activities Detects lightning activity (cloud to ground lightning) up to 40 miles away Uses a trend of strike distances to determine if storm is approaching or departing   Depress the power button for one second for lightning-track information:     If the LEDs cycle from green to red, storm is approaching    If the LEDs cycle from red to green, the storm is departing     If the LEDS cycle from the center LED to the outside LEDs, the storm     is stationary or not enough data is available      Power button has four functions: On, On with Tone, Off and Storm Direction Power Saving Feature (automatically powers down after 2 hours of operation if there is no lightning activity)  Battery test shows battery level each time detector is turned on Designed for outdoor use (will work indoors but its ability to detect lightning strikes can be affected by common sources of electromagnetic emissions) Strik