<b>AWBLIN Professional 3-60V Digital LED Automotive Circuit 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.</b><br><br>LED DIGITAL INDICATION, BIDIRECTIONAL VOLTAGE TESTING </b><br><br><b>Red Light For Negative & Ground</b><br>Attach the alligator clamp to the Postive and connect the probe to the Ground(Negative)<br><br><b>Green Light For Postive</b><br>Attach the alligator clamp to the Ground and connect the probe to the Postive<br><br><b>OVER-RANGE WARNING</b><br>If the voltage exceeds 60V during the test, the screen will display: "ol", Please stop the test immediately！<br><b>UPGRADED AUTO CIRCUIT TESTER:</b><br><br>√ 3-60V DC Wider Range <br>√ LED Digital Indication, Bidirectional Voltage Testing <br>√ Bundled with hookup clip and stabbing line locate cover<br>√ Computer Safe <br>√ Large Size Alligator Clip <br>102" Extended Spring Wire <br><br><b>WARNING: <br> Only for testing DC voltage, not allow for AC voltage. <br>Only for testing 3-60V. <br>Please make sure that the voltage value of the product to be tested is within this range before testing.</b>