Description: Automotive Electrical Circuit Tester for diagnose 12 to 24 volt automotive electrical system, is a must-have for auto technician. Voltage & Polarity Testing-Determine DC/AC Voltage and Postive/Negative quickly. Resistance Continuity Testing- LCD Screen display the value of resistance, AC Circuit Singal Testing- Fast to trubleshoot the sensors circuit problem. Testing Trailer Lights and Connections-10M extension cable allow your to test Cars or Trucks, Checking for Bad Ground Contacts and Locating Short Circuits Two Kinds of Supply Modes, Powers by cigarette lighter or car battery You won’t regret owning such a reliable, multi-functional kit. Specification: Type: Automotive Electrical Circuit Tester Model: P100 Display: T-FT color display (160 x 128 dpi) Operating Temperature: 0 to 60°C (32 to 140 F°) Storage Temperature: -40 to 70°C (-40 to 185 F°) External Power: 12.0 or 24.0 V power provided via vehicle battery Dimensions: Length 165 mm * Width 40 mm * Height 27 mm Test Tool Specifications: DC voltage range : 0-65V +1 digit Resistance range : 0-200 K ohm Frequency response of tone pass through 0Hz to 10K hz. Circuit Breaker Rating current: 1-10 Amp Testing Standard: 100% current : no trip 150% current: trip in one hour 200% current: trip in 3-30 seconds. 300% current: trip in 0.5-4.0 seconds. Package Includes: 1x Electric Circuit Tester kit Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you