Description: 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 ground test. It is a powerful tool that can meet all your testing needs. Clear LCD Display: The digital tester has a high-resolution LCD display 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 indicator. Conversely, when the probe detects a negative pole or performs reverse activation, the green LED on the front lights up along with a blue LCD voltage indicator. Lighting Design for Night Use: Don't fear darkness with a unique lighting design! This tester is suitable for nighttime repairs as it provides convenient lighting in low-light conditions. Wide Range of Applications: Automotive circuit tester supports all 3.5-36V electrical system testing including cars, pickups, SUVs, motorcycles, motor vehicles, motor boats, etc. Product Specifications: The circuit test pen has an ABS case for durability and measures 240mm in size. It is powered by an external power supply supplied by a vehicle battery with 12V or 24V DC. Specification: Material: ABS . Color: Multicolor Size Chart: Rated Current: 1-8Amp Accuracy: 2% Working Temperature: -10C-60C Accuracy: 80% Overload Protection Current: 8A DC Voltage Range: DC 3.5V-36V External Power Supply: 12V or 24V DC Powered by Vehicle Battery Package Includes: 1 Automotive Circuit Tester Note: Please allow minor error due to manual measurement and different monitors.