Lisle Tools 24550 Computer Safe Circuit Tester
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Also Indicates Polarity. 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.
24560 Fuse bulb
*LED Bulb
*Best choice when testing 12V