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Heavy Duty 3-48V Backlit Digital LCD Circuit Tester
Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless Probe
professional digital Circuit 3-48V DC Tester designed for car electrical circuits, automotive battery, battery charging systems, ignition systems, which is a must have tool for any automotive engineer, electronic engineer or circuits DIY.
1. Only for DC 3-48V circuits voltage testing, can't be used for any AC wires or circuits.
2. You can attach the alligator clamp either to ground or positive, the LCD will display "+" "-"to indicate volt polarity.