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Lisle 24550 Computer Safe Circuit Tester

4.3 out of 5 stars 11 customer reviews

Price: $12.44 & FREE Shipping on orders over $49. Details
In Stock.
Ships from and sold by Amazon.com.
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  • Also indicates polarity
  • Won't damage sensitive electronic components
  • Draws less than 21mA at 12 volts DC
  • Operating range 3-28 volts
  • The red light indicates positive polarity, green indicates negative polarity
50 new from $10.24

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$12.44 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Lisle 24550 Computer Safe Circuit Tester
  • +
  • Lisle 24560 Replacement Bulb for Computer Safe Circuit Tester
Total price: $19.34
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Product Information

Technical Details

Brand Lisle
Item Weight 2.4 ounces
Product Dimensions 2.7 x 0.8 x 5.9 inches
Item model number 24550
Manufacturer Part Number 24550

Additional Information

ASIN B00097CIO0
Customer Reviews
4.3 out of 5 stars 11 customer reviews

4.3 out of 5 stars
Best Sellers Rank #167,187 in Automotive (See top 100)
#109 in Home Improvement > Electrical > Testers > Circuit Testers
Shipping Weight 2.4 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 7, 2004

Warranty & Support

Warranty, Parts:Parts

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Product Description

Safe for automotive computers. Won't damage sensitive electronic components. Draws less than 21 mA at 12 volts DC. Operating range 3-28 volts. The red light indicates positive polarity, green indicates negative polarity.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

The tester works well. Nice that it tests both ways, red or green light. I use it on 24 volt systems and it has no problem, many of the 12 volt testers burn out the bulb.
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Verified Purchase
I used it on a new 2013 vehicle and it didn't blow up the computer so I'm 1 for 1 on it being safe. Nice sharp point and easy to see LED lights. I would buy another if this one disappeared.
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Verified Purchase
An ok test light, it works just as described except the wire was a little too short. Took off 1 star
Overall a good buy
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Verified Purchase
Works great very handy, and nice to know it won't pull higher amounts of current through computer circuits causing damage
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Verified Purchase
This tool work great for the job. I installed remote starter kit and it was very helpfull.
Thank you
Lloyd
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By Mario L. on December 30, 2015
Verified Purchase
great product!!!!!!!!!
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