[WIDER VOLTAGE RANGE] Compared with the auto electrical tester on the market, the maximum voltage measured is only 48V, but the maximum voltage that our technology can measure is upgraded to 60V. Circuit test is Perfect for checking various vehicles electrical circuits, quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, fuse connections, also for testing other 3-60V DC wirings and circuits.[UNIQUE DESIGN- ILLUMINATION & ANTI-LOST NEEDLE GUARD PROTECTION]: To be a proper solution for night time testing job, the electric test pen comes with a lighting function to support your testing needs in low-light environment. What's more, needle guard function is added to ensure that there will be no stab wounds and the guard will not be lost.[LED INDICATION, BIDIRECTIONAL VOLTAGE TESTING]: This upgrade circuit test light is a bidirectional voltage tester. You can attach the alligator clamp either to negative or positive ground, there is also a light emitting diode on the circuit board for polarity indication, red light indicates positive polarity and green light indicates negative polarity.[INTUITIVE LCD BACKLIT DIGITAL SCREEN]: This Heavy Duty circuit light tester with highly clear LCD digital blue backlit display screen, resolution to 0.1V, clear&visible digital readouts for day and night.[WATERPROOF, DURABLE & SAFER]: This is a professional auto circuit tester with IP66 waterproof rating. The high-quality PU spring wire can be stretched to 142 inches, which is environmentally friendly and highly elastic; the wire end adopts PA nylon anti-bending design structure, which is more durable; the sharp stainless steel probe with insulating sleeve has more Good conductivity to prevent accidental injury. Using Test Light to make your life more convenient and saferPrecision: 3-4V +/- 0.5V 4-60V(1%+3digits)Operating Temperature: 0-50Working Humidity: less than 80%colour: black + orangeMaterial: plastic + metalSize: 11.03x2.8x1.93inchesPackage Contents: 1 x Voltage Circuit TesterOnly the above package content, other products are not included.Note: Light shooting 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.