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General Personal Lightening Detector LD7

General Tools & Instruments  |   Item# DO-23003-77

$82.75 USD/EACH

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Usually ships in 15 days.

  • Detects lightning up to 40 miles away
  • Early warning detection of pending storms and lightning
  • Produce visual and audible alarms
  • Ideal for safe outdoor activities at work sites, farms, school and university athletic events, golf courses, and little league ball fields
LD7 Pocket-Size Lightning Detector is small enough to fit in your pocket or clip to a belt loop — perfect for outdoor activities. Multiple alarms signals include an audible alarm, a vibration alarm, and LEDs that sequentially illuminate at distance intervals of 24 to 40 miles, 12 to 24 miles, 6 to 12 miles, and 0 to 6 miles to inform you that the danger is approaching, departing, or stationary.

Facts about Lightning and Thunderstorms:

  • Average lightning stroke is 6 miles long
  • Average thunderstorm is 6-10 miles wide
  • Average thunderstorm travels at a rate of 25 miles per hour
  • On average, thunder can be heard over a distance of 3-4 miles depending on humidity, terrain and other factors
  • Approximately 100,000 thunderstorms occur in the United States each year
  • Approximately 10% of all thunderstorms are severe enough to produce high winds, flash floods and tornados

    What's Included:
    clip and two AAA batteries.
    Product Type Lightning Detectors
    Display LED
    Dimensions 3-3/8" L x 2-1/8" W x 1" H
    (84 x 55 x 24 mm)
    Power two AAA batteries (included)
    Brand General Tools & Instruments
    Qty/ea 1
    Range 0 to 6 miles, 6 to 12 miles, 12 to 24 miles, 24 to 40 miles
    Model LD7

  • Accessories

    at $38.75 USD/PACKAGE of 12

    In stock.

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    Product Reviews


    by PowerReviews
    General Tools LD7 General Personal Lightening Detector

    (based on 1 review)

    Reviewed by 1 customer

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    (2 of 3 customers found this review helpful)


    kind of unreliable

    By Steve Wastewater Plant

    from Fort Lauderdale



      • Inaccurate

      Best Uses

      • Outdoor

      Comments about General Tools LD7 General Personal Lightening Detector:

      doesn't seem to alarm when surrounded by lightning, seems to be ok for 6-40 miles away, but in the midst of a storm- does nothing

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