Advantage
This smart circuit tester can measure DC voltage, resistance, and continuity in cars,
as well as check battery polarity.
Application
The OBDResource CP03 circuit tester incorporates a default smart measurement mode
that automatically recognizes electrical signals- including DC voltage, polarity, resistance,
and continuity—and displays results on the screen in real time, requiring no ma
Technical parameter
1. Intelligent Automatic Detection Function
Fully Automatic Signal Recognition: In the default smart measurement mode, the probe
automatically identifies measured signals (DC voltage, polarity, resistance, and continuity)
upon contact with the power supply or resistance, eliminating the need for manual mode
switching and ensuring minimal operation.
Data Hold Function: Press the "Hold" button to lock the measured data on the screen for easy
recording and reading, streamlining the testing process.
Broad Voltage Detection Range: Supports 0.8V–100V DC voltage testing, suitable for various vehicle
circuit applications, including car fuse testing, wire diagnostics, battery analysis, and ACC system inspections.
Automatic Polarity Detection: Instantly identifies the positive/negative terminals of the battery; a "-" symbol
preceding the reading indicates negative polarity for intuitive and error-free diagnosis.
Precision Resistance & Continuity Testing: Offers a resistance detection range of 1Ω–20MΩ,
with resolutions of 0.001V (under 2V DC) and 0.1V (at 100V DC) for voltage, and resistance resolutions ranging
from 1Ω–0.01MΩ (low resistance) to 2000Ω–20MΩ (high resistance). Accuracy is rated at ±1%, meeting
professional-grade testing standards.
Real-Time Alerts: A built-in buzzer triggers an alarm when resistance falls below 50Ω, while the screen displays "OL"
for DC voltages exceeding 100V, providing instant warnings for abnormal conditions.
Safe Operation Design: Features a long spring negative clip and a protective probe head cover, enabling one-handed
operation and safe storage to prevent short circuits and ensure user safety.
Low-Light Adaptability: Equipped with a backlit LCD display and a built-in flashlight, allowing clear readings and precise
operations in dim environments. Short-press the light key to toggle the screen backlight; long-press to switch the flashlight on/off.
Energy Efficiency & Portability: Auto-shuts off after 15 minutes of inactivity to conserve battery life. Includes a storage bag
for easy transportation and secure storage when not in use.
Versatile Applications: Designed for comprehensive vehicle circuit maintenance, from basic fuse checks to complex system
diagnostics, catering to both DIY enthusiasts and professional mechanics.
Intuitive Feedback: Displays clear indicators (e.g., polarity "-", overvoltage "OL") and audible buzzer feedback, minimizing
user error and enhancing troubleshooting efficiency.