Power detection pen with voltage function Whether you are a maintenance engineer or an ordinary user, this testing pen can provide you with assistance. The hard shell makes it more suitable for working in harsh environments than a multimeter. Circuit Tester can be used to detect battery power, GND and test shorts and breaks in wires. The detection voltage range is very wide, up to 90V (specified model) This product can be used to detect circuits in automobiles, trucks, and various vehicles, for power failure testing, circuit on/off testing, and voltage testing. The newly designed digital display screen allows you to see the test results more intuitively. It can not only be used to determine whether the power line is conducting, but also whether the voltage is too high or too low Excellent anti daze design, without the need to distinguish between the positive and negative poles of the power supply. The red LED lights up to indicate positive polarity, while the green LED lights up to indicate negative polarity. The PCB is designed with high brightness LEDs, which are clearly visible even in sunlight. Note: Due to different production batches, there may be slight differences in the appearance of the actual goods, such as the color of the wires, but this does not affect its performance and technical indicators. We are a professional automotive parts supplier. If you have any needs, you can contact us. We will search for high-quality and low-priced products for you and look forward to your consultation.