🔧 Automotive Circuit & Relay Tester – Test Voltage, Polarity, Relay & Continuity in Seconds
Electrical problems are a nightmare – you don't know if it's the relay, the circuit, or just no power. This diagnostic probe changes that. Tests voltage, polarity, continuity, relays, and short circuits – all with one tool. Red light for positive. Green light for negative. Works on 12V and 24V vehicles. Find the problem fast. Fix it faster.
✨ Why This Circuit Tester Works
🔍 5-in-1 Diagnostic Functions
Voltage Test – check circuit power
Polarity Test – identify positive and negative wires
Continuity Test – check wire integrity
Short Circuit Test – find shorts quickly
Relay Drive Test – test relay function
🔴🟢 Positive/Negative Indicator Lights – Instant Diagnosis
Red light for positive (+) detection. Green light for negative (-)/ground detection. No light means no voltage. Simple, clear, instant – no guessing.
📊 Digital Voltage Display – Clear and Accurate
High-definition digital display shows exact voltage – no more guessing if you have 12V or 24V.
🔦 Built-in Work Light – See What You're Doing
Dual light illumination – brightens dark engine bays and under-dash areas. No more holding a flashlight.
🎯 Perfect For
🚗 Auto repair shops – fast, accurate diagnostics
🔧 Mechanics and electricians – professional-grade tool
🛠️ DIY car enthusiasts – save money on diagnostics
🚛 Truck and commercial vehicle repair – 24V compatible
🏗️ Construction equipment maintenance – works on heavy machinery
🔌 Circuit and relay troubleshooting – finds problems fast
📦 What's Included
1 x Automotive Circuit & Relay Tester
Positive/Negative indicator lights – red + green
Digital voltage display
4-Pin and 5-Pin relay sockets
Battery clamps – easy connection
Output probe – with built-in light
Relay reset button – quick testing
❓ Quick Answers
Q: What vehicles does this work on?
A: All 12V/24V vehicles – cars, vans, trucks, buses, construction equipment, and engineering machinery. Works on all 12V and 24V systems.
Q: What can I test with this?
A: Voltage, polarity, continuity, short circuits, and relays (4-pin and 5-pin). Five diagnostic functions in one tool.
Q: How do I read the indicator lights?
A: Red light = positive voltage detected. Green light = negative/ground detected. No light = no voltage. Simple and instant.
Q: Does it have a display?
A: Yes – high-definition digital voltage display – shows exact voltage for accurate diagnostics.
Q: Can I test relays with this?
A: Yes – supports 4-pin and 5-pin standard automotive relays. Includes relay socket and reset button.
Q: Does it have a light?
A: Yes – built-in dual work light – brightens dark engine bays and tight spaces.
Q: Is it easy to use for beginners?
A: Yes – simple indicator lights and clear controls – anyone can use it. Professional-grade but beginner-friendly.
Q: What's the voltage range?
A: DC 3.5V – 36V – covers all 12V and 24V vehicle systems.
