Name:voltage test pen Precautions:The product is not a buzzer, without sound, only for testing voltage. Colour:Black Material:Plastic Package Contents: 1 * Voltage test pen Only the above package content, other products are not included. Note: Light reflection 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. LED indicates the positive and negative poles, red is the positive pole and green is the negative pole. The integrated structure design of the probe protective sleeve is adopted to increase the needle 3-60VDC line tester can be used for 6V, 12V, 24V and 48V systems. Real-time display of test voltage. The professional automatic circuit tester has a built-in circuit board chip, which is and more than the traditional test lamp and prevents the automobile computer board from burning out. The circuit test is perfect for checking various 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.