Price history on Walmart.com for
Atd Tools ATD-5503 Cordless Professional Circuit Tester
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Tests circuits from 3 to 28 Volts DC LED Light & Buzzer Indicator Does Not Require a Ground Wire or Clip Safe for work on Automotive Computers ECMs Airbags etc. Special V-Tip allows safe piercing and can be removed to test in hard-to-reach places Operates on replaceable long-life Alkaline batteries (included)
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