INSTANT AND ACCURATE VOLTAGE READINGS: This professional digital test light with voltmeter features a crystal-clear digital LED screen that delivers pinpoint voltage measurements from 3-48V with 0.1V resolution. Making it the perfect voltage tester for any automotive electrical work and systems, ideal for professional technicians and DIYers alike AVOID COSTLY CONNECTION ERRORS: Stay safe and protect sensitive vehicle electronics with the intuitive dual-color polarity lights, red for positive (+) and green for negative (-)—that illuminate instantly when the stainless steel probe touches a circuit. Taking the risk out of electrical work, making it a must-have for garage safety BUILT TO SURVIVE THE BUSY WORKSHOPS: This electrical tester boasts a rugged ABS body that resists drops, grease and impact, ideal for the chaos of garages or DIY home projects. The sharp stainless steel probe penetrates tight spaces and maintains solid contact, while the reinforced construction ensures long-lasting performance even with daily use FLEXIBLE TO REACH EVERY SPOT: Effortlessly diagnose hard-to-reach areas with the extra-long, 96-inch flexible spring coil wire. It allows you to easily access any part of your car, truck, or motorcycle from a single ground point. Plus, the integrated anti-lost probe cover keeps your tool protected and easy to find VERSATILE FOR ALL YOUR NEEDS: This all-in-one automotive circuit tester is ideal for 12V/24V systems. Perfect for checking fuses, verifying voltage at connectors, testing circuits, and tracing wires on your car, truck, RV, boat, and more. Making it an essential tool for consistent quality in your daily electrical troubleshooting