【Professional 3-in-1 Circuit & Relay Diagnostic System】 Upgrade your garage with the ultimate all-in-one powerhouse. This tool seamlessly integrates a Digital Power Probe, a Specialized 3-Slot Relay Tester, and a Component Activator. From testing voltage and continuity to diagnosing complex relay circuits and locating short circuits, it replaces multiple tools to solve 90% of automotive electrical issues in one go. 【Precision 3-36V LCD Display & Smart Polarity LEDs】 The backlit LCD provides real-time voltage readings from 3V to 36V DC with 0.1V accuracy. Features instant polarity detection without pressing any buttons: simply touch the probe to a contact—the dual-color LED glows Red for Positive/Power and Green for Negative/Ground, allowing you to identify complex wiring harnesses in a split second. 【Instant Component Activation & Safety Circuit Breaker】 Take full control with the built-in rocker switch to safely inject positive or negative battery current directly to the probe tip. Instantly power up fans, motors, and lights to verify their health. The Internal Circuit Breaker automatically trips and sounds a warning beep if overloaded, protecting your vehicle's sensitive ECU and electronics from accidental damage. 【Dual-LED Flashlight &  Extended Reach】 Designed for deep engine bays and dark under-dash repairs, the probe tip is flanked by Dual High-Intensity LEDs for crystal-clear visibility. The high-durability 4ft extended cable allows you to reach from the battery at the front all the way to the rear tail lights without struggling, making it an indispensable tool for solo diagnostics. 【Universal 12V-24V Compatibility & Industrial Build】 Engineered for the rugged professional environment, this tester features an oil-resistant, drop-proof matte shell with an ergonomic grip. Perfectly compatible with 12V and 24V systems across all vehicles, including Cars, Pickup Trucks, SUVs, Motorcycles, Construction Vehicles, Boats, and RVs. (Note: DC use only; do not use on AC voltage).

TECHNICAL SPECIFICATION

Rated Current Accuracy

1-8Amp

Relative Humidity

≤80%

DC Voltage Range

DC 3.5-36V

Overcurrent Protects Current

8A

Operating Temperature

-10℃-60℃

Precision

±2%

Package Including

1* PowerScan,1* 15ft cable,1*Probe tip 1* Battery clips 1* User's Manual,1* Colorful Packaging Boxes