Features: Function: Fuel injector signal detection/intelligent circuit breaker/frequency/duty cycle/DC voltage/AC voltage/resistance/diode/intelligent testing. Intelligent Testing: No need to select the mode after switching on, it can quickly detect the voltage, resistance and diode in the wiring of vehicle electrical system. Frequency and duty cycle measurement: TopDiag P150 can measure the frequency and duty cycle in a circuit, helping users analyze the working status of the circuit and accurately determine the cause of faults. Circuit Breaker: The circuit breaker has a short-circuit protection function, if overloaded, the internal circuit breaker automatically trips, always protecting the use of safety. Supports multiple languages: English, Spanish, German, French, Italian, Portuguese, Polish, Japanese, Korean and other languages. Supports detection of all 12-24V vehicle electrical systems. Specifications: Brand: TopDiag Model: P150 Item: Car Tester Color: Black, Red Material: Plastic Display: TFT Color Display(160*128DPI) Power Supply: 12.0 or 24.0V from car battery Voltage: 0.1~70V≤1% error Resistor: 0.1Ω~200KΩ error≤1.5% 100K or less other ranges ≤2 Diode: 0.2V-2.6V Frequency: 10HZ~200KHZ Duty Cycle: 1-99% Tester Body Size: 19*5*3.5cm( The length not includes probes length) Package Size: 25*8.5*18.5cm Package Weight: 1203g Package List: 1 * Car Tester 1* Cable Sets 1* Storage Bag 1* User Manual