12/24V Automotive Car Circuit Tester Battery Electrical System Diagnostic Resistance Voltage Positive Negative Detection Component Activation Grounding Test Tracing Shortcircuits

Professional-grade P106 automotive circuit tester, suitable for 12–24V vehicles. Equipped with a high-precision LCD display, it can diagnose voltage, resistance, diodes, continuity, and short-circuit issues. Ideal for cars, trucks, and excavators.

Product Details 
Resolve All Electrical Faults in Minutes—The All-in-One P106 Circuit Tester

Introduction:
Say goodbye to guesswork and start precise diagnostics. The P106 Circuit Tester is your ultimate partner for electrical systems, designed to significantly reduce diagnostic time for all 12–24V vehicles. Whether you’re a professional technician or a DIY enthusiast, this tool lets you test voltage, resistance, diodes, and continuity with lab-grade precision. From tracking short circuits to activating components, the P106 puts a complete diagnostic lab right in the palm of your hand.

2. Key Features
Versatile diagnostic modes for a wide range of scenarios
The P106 is much more than a simple test light. It integrates eight key functions into one rugged and durable tool:

Voltage and Polarity Testing: Instantly identify the positive and negative terminals of a circuit with clear digital readings.

Resistance and Diode Testing: Measure resistance values from 1 Ω to 220 kΩ and test the forward voltage drop of diodes.

Continuity and Ground Testing: A beep and green backlight indicate a good ground connection.

Component Activation: Safely power relays, motors, and actuators directly through the probes.

Short Circuit Tracing: Quickly locate and isolate short circuits without wasting fuses.

3. Technical Specifications and Upgrade Highlights
Visible Precision
The P106 has been upgraded to a higher-resolution 4-digit HTN display, providing clear and crisp readings even in bright light. Unlike the older 3-digit display, you can obtain accurate data at a glance.

Powerful Technical Specifications
Specification    Details
Supply Voltage    DC 5–40 V
Measurement Voltage    0.1 V–100 V
Measurement Resistance    1 Ω–220 kΩ
Trigger Current    0–8 A
Operating Temperature    0–60 °C (32 °F–140 °F)
Storage Temperature    -20 °C–70 °C (-4 °F–158 °F)

Designed for Real-World Applications
Dual Power Supply: Can be powered directly by a 12V or 24V vehicle battery, or using the built-in 3 AAA batteries, offering flexible options.
Wide Measurement Range: Equipped with a 4-meter extension cable and battery clamps, enabling comprehensive testing from the front to the rear of the vehicle.
Built-in Flashlight: A high-brightness LED light helps you work easily in dimly lit engine compartments or under the vehicle.
Safety First: Equipped with circuit breaker protection to prevent damage caused by overloads.

4. Applications
Widely Used in the Automotive Industry
The P106 supports all 12–24V vehicle electrical systems. It is widely used in the automotive repair industry for:
Passenger Cars and SUVs: Diagnosing starting/charging issues and sensor malfunctions.
Trucks and Heavy Equipment: Testing high-power electrical systems on equipment such as excavators, bulldozers, and road rollers.
Trailers and Boats: Testing lighting systems and wiring connections.

5. Package Contents
1 P106 Circuit Tester unit
1 4-meter extension cable (with battery clamps)
1 User Manual
(Batteries not included)