Anti-needle drop protection: The integrated structure design of the probe protective sleeve is adopted to increase the needle protection function to that the needle is not stabbed and the needle is not lost. LED INDICATION: This upgraded circuit test light is a bidirectional voltage tester. You can connect the alligator clip to negative or positive ground, there is also an LED on the board for polarity indication, red for positive and green for negative. BUZZER WARNING: During the test, the LED light is on and the buzzer sounds. Wideer Voltage Range:Compared with the car electrical testers on the market, the maximum voltage measured is only 48V, the maximum voltage that can be measured by technology is upgraded to 60V. The circuit test is perfect for checking vehicle circuits, quickly checking car headlights, taillights, turn signal circuits, faulty sockets, fuse connections, and also for testing other 4-60V DC wiring and circuits. color:As shown Material:plastic Package Contents: 1 x voltage tester Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.