36V Automotive Circuit Tester Pen, Car Test Lamp, Vehicle Voltage Tester, Determines Battery Positive and Negative, Auto Electrical Tester, Alligator Clip

【Wide Application】The circuit test lamp with a low DC voltage testing range of 3 to 36V is designed to check various vehicle electrical circuits, such as car headlights, taillights, turn signal circuits, faulty sockets, and fuse connections. It is also useful for testing other 3- and 36V wiring and circuits. Additionally, the positive or negative battery polarity can also be determined using the red and green LED indicators.

【Clear Digital Display and LED Indicators】The circuit light tester features a very clear LCD screen, a 1V voltage reading resolution with an accuracy of ±0.2V. Furthermore, when determining power supply polarity, the two LED indicators light up in different colors to assist in the determination.

【3-Position Switch】The circuit light tester has a 3-position switch. The 3 speeds are off, Check the positive and negative terminals of the battery and test the voltage. When checking the positive and negative terminals of the battery, the red light indicates a positive connection and the green light indicates a negative connection.

【Sharp Pure Copper Probe】The voltage tester has a pure copper probe that won't rust and conducts very well. It is sharp enough to easily pierce wires and reach into narrow and hard-to-access areas. The casing is insulated, so you can work safely.

【TPU Spring Wire and Alligator Clips】The extended TPU spring wire can be used in more situations. It has more flexibility than ordinary wire and is easier to organize and store. The pure copper alligator clip is very firm, won't slip, and is very convenient to use.