【Universal】 The voltage tester pen can be used for cars, trucks, boats, trailers, RVs, motorcycles, snowmobiles and other maintenance operations. The test pen is used to check fuses, switches, armatures, distributors and electrical circuits to quickly and easily locate short circuits and open circuits. 【High Performance】 The circuit probe tester adopts a digital display, allowing you to see the voltage more clearly, accurate voltage readings, accurate to 0.1 volts. 【Professional Manufacturing】 The car voltage tester is manufactured under strict quality control standards, in accordance with professional factory specifications. The voltage test pen with probe is convenient to use, allowing easy piercing and hard-to-reach areas, and the spring wire can be stretched as needed. 【High-quality materials】The car voltage tester is made of high-quality ABS copper material. This product has the characteristics of long service life, high strength, and long service life.