Multifunctional and Practical: This automotive circuit tester is equipped with various functions including self test, limit detection, continuity test, component detection (online and offline), jumper operation, and grounding test. It's a powerful tool that can handle all your testing needs.Clear LCD Display: The digital tester features a high definition LCD for easy reading. When the probe detects a positive pole or performs forward activation, the front red LED lights up along with a blue LCD voltage display. Conversely, when the probe detects a negative pole or performs reverse activation, the front green LED lights up along with a blue LCD voltage display.Illumination Design for Night Use: Fear no darkness with a unique illumination design! This tester is for night time repairs as it provides convenient lighting in low light conditions.Wide Range of Applications: Automotive circuit tester supports all 3.5-36V electrical system tests including cars, pickups,off road vehiclesMmotorcyclesMengineering vehiclesMboats etc.Product Specifications: The circuit test pen has an ABS body for durability and measures 240mm in size. It operates at an external power supply provided by a vehicle battery of 12V or 24V DC power supply. Specification: Material: ABS Color: Multicolor Size Chart: Rated current: 1-8AmpAccuracy:2%Working temperature:-10C-60CAccuracy: 80%Overload protection current: 8ADC voltage range: DC 3.5V-36VExternal power supply: 12V or 24V DC power supply via vehicle battery Package Includes: 1 Automotive Circuit Tester Note: Please allow slightly errors due to manual measurement and different monitors.