Features: Multi-features: Component Flexibility. Voltage Detection. Diode Detection. Continuity Testing. Ground Detection. Tracking to locate short circuits. Positive and negative detection. Overload Protection. Lighting. Sound Alert. LCD High Definition Display: When the probe detects a positive pole or performs a positive activation, the front red LED lights up with a blue LCD voltage display. When the probe detects a negative terminal or performs a reverse activation, the front green LED lights up with a blue LCD voltage display. Lighting Design: Unique design for easy maintenance lighting at night. Easy to use at night. Wide Range of Products: Support all 3.5-36V electrical system testing, including cars, pickup trucks, off-road vehicles, motorcycles, construction vehicles, boats, etc. Specifications: Item name: Automotive Circuit Tester Model: CNBJ-823 Item color: Blue DC voltage range: 3.5-36V Over-current protection current: 8A Rated current: 1-8Amp Accuracy: ±2% Line length: 4.5 meters Operational temperature: -10 to 60℃/-4 to 158℉ Relative humidity: < 80% Item size: Approx.26*4*2.8cm/10.23*1.57*1.10in Total weight: 390g/13.75oz The package: 1*Automotive Circuit Tester. 1*User Manual."