OBDResource 0.8-100V Intelligent Identification Automotive Circuit Tester 1. Fully automatic signal recognition: In the default intelligent measurement mode, when the probe contacts the power supply or resistor, it automatically recognizes signals such as DC voltage, polarity, resistance, on-off status, etc., and displays measurement results on the screen in real time. There is no need to switch mode manually, and the operation is minimal, without manual switching operation. Data retention function: Press the "hold" button to lock screen data, which is convenient for recording and reading of detection results, and reduce operation steps 2. Wide voltage detection range: supports 0.8V-100V DC voltage detection, suitable for various vehicle circuit scenarios such as automobile fuse testing, line inspection, battery and ACC system diagnosis. It can automatically determine the positive and negative poles of the battery, and the "-" symbol before reading is intuitively displayed to avoid misjudgment. 3. Resistance and on-off test: Resistance detection range is 1Ω-20MΩ, with resolutions up to 0.001V (below 2V) and 0.1V (at 100V), and resistance resolution covers 1Ω-0.01MΩ (low resistance) and 2000Ω-20MΩ (high resistance), meeting professional-grade detection requirements 4. Beep and overvoltage prompts: The buzzer automatically alarms when the resistance is lower than 50Ω; the screen displays "OL" when the voltage exceeds 100V, and the abnormal state is warned in real time 5. Equipped with long spring negative electrode clip and probe protective cover, support one-handed operation and safe storage, avoiding the risk of short circuit 6. Applicable to dark environments: built-in backlight LCD display and flashlight, short press and short press to switch the backlight on the screen, long press to turn on the flashlight, meet clear reading and accurate operation in the dim environment in the car 7. Automatic shutdown without operation in 15 minutes, saving power, standard storage bag, easy to carry and store, protecting e