As a mechanic with over 20 years of experience, I've relied on tools like the Power Probe 3 for diagnosing electrical issues. But after testing the Autel PowerScan PS100 Circuit Tester, I can confidently say this is a game-changer-especially at half the price. Here's my hands-on review and why it deserves a spot in your toolbox.
Key Features & Advantages Over Power Probe 3
✅ All-in-One Functionality
1. DC Voltage Testing - Quickly check power and ground with clear visual and audible feedback.
2. Ohm Resistance Testing - Built-in resistance testing for circuits, switches, bulbs, and fuses.
3. AC Voltage Mode - Measures max/min voltage, frequency, and duty cycle (useful for advanced diagnostics).
4. Large Digital Display - Easy-to-read screen, perfect for low-light conditions or aging eyes.
5. LED Work Light - Bright top-mounted LEDs for illuminating dark areas.
✅ Superior Value & Package
1. Comes Complete - Includes 20-foot extension lead, cigarette lighter adapter, positive/negative leads, and spare tip.
2. Lower Price - Almost half the cost of the Power Probe 3, yet offers more functionality.
3. Replaceable Parts - Trigger switch and tip are user-replaceable, extending tool life.
✅ Ergonomic & Practical Design
1. Fits comfortably in hand with molded finger grips.
2. Includes a mute button to disable audible tones when needed.
3. Built-in circuit breaker with a simple reset button for overload protection.
Real-World Testing & Performance
Here's how the Autel PowerScan performed in common shop scenarios:
Test | Result |
Headlight (Halogen & LED) | Successfully powered and tested both high and low beams. |
Blower Motor | Activated motor directly-confirmed operation in seconds. |
Switch Testing | Verified continuity and switch light operation using resistance and voltage modes. |
Fuse Testing | Checked glass and blade fuses for continuity without applying power. |
Wire Continuity | Identified good and broken circuits using resistance mode. |
Comparison: Autel PowerScan vs. Power Probe 3
Feature | Power Probe 3 | |
Image |  |  |
Price | ~50% cheaper | ~$160+ |
Resistance Testing | ✅ Yes | ❌ No |
Display | Large digital screen | Small LED indicator |
Included Leads | Full set included | Extra leads sold separately |
Warranty | 1 year | Varies |
Made In | China | USA (global materials) |
Verdict: While the Power Probe 3 feels more premium, the Autel offers better functionality per dollar and includes features the Power Probe lacks.
Who Should Buy This?
Professional Mechanics - Saves diagnostic time, especially for fuel pumps, compressors, lighting, and ground/power checks.
DIY Enthusiasts - User-friendly and complete kit for home garage electrical troubleshooting.
Shop Owners - Affordable, reliable, and reduces the need for multiple tools (test light, multimeter, power activator).
Final Recommendation
The Autel PowerScan PS100 is an invaluable diagnostic tool that combines a test light, circuit tester, and multimeter into one handheld device. It's reliable, feature-packed, and priced to sell. For any mechanic looking to speed up electrical diagnostics without breaking the bank, this tool is a no-brainer.
Contact Info:
Email: sales@AutelShop.de
Wechat: +86-13429866263
Whatsapp: +86-13429866263
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