An electrical problem shouldn't mean replacing parts at random. This 3-in-1 automotive power probe puts live voltage checks, polarity identification, compatible component activation and relay testing into one hands-on diagnostic tool.
⚡ DC 3.5–36V🔎 Digital Voltage Display🔧 4/5-Pin Relay Tester
READ THE VOLTAGE✦IDENTIFY POLARITY✦CHECK THE RELAY✦TEST THE COMPONENT✦
READ THE VOLTAGE✦IDENTIFY POLARITY✦CHECK THE RELAY✦TEST THE COMPONENT✦
01 / LESS SWITCHING BETWEEN TOOLS
Too Many Testers. Too Many Loose Ends.
A light won't turn on. A fan stops responding. A relay might be faulty—or the wiring might be the real problem. Instead of bouncing between a test light, jumper leads and different tools for every question, start with one organized diagnostic probe.
Find out what's happening in the circuit before you start buying replacement parts.
02 / SEE WHAT THE CIRCUIT IS DOING
Read Voltage and Polarity at a Glance.
Touch an accessible test point and watch the backlit LCD show DC voltage. Red and green indicators help distinguish positive power from ground, so the next troubleshooting step feels a lot clearer.
3.5–36VSeller-listed DC test range
Red / GreenPower and ground indicators
03 / TEST THE PART BEFORE REPLACING IT
Is It the Wiring—or the Component Itself?
Apply positive or negative battery power through the probe to activate appropriately rated DC components for testing. Check the response of compatible lights, fans, horns or motors and make a more informed repair decision.
💡 Lights🌀 Fans⚙️ Motors📢 Horns
04 / CHECK THE RELAY RIGHT ON THE TOOL
A Dedicated Check for 4-Pin and 5-Pin Relays.
The tester includes relay sockets for selected common automotive four- and five-pin layouts. Verify the relay's pin arrangement, connect the tool to its compatible battery source and use the testing controls to evaluate relay operation.
4-PinCompatible common relay layouts
5-PinAdditional compatible relay layouts
05 / LIGHT UP THE PLACE YOU'RE TESTING
See the Connector, Not Just the Dashboard.
Two small LED work lights near the probe tip help illuminate terminals and wires in engine bays, fuse compartments and darker under-dash spaces. It's a practical detail when the fault is tucked somewhere inconvenient.
🔦 Dual Tip LEDs🚗 Engine Bays🔌 Connectors & Terminals
06 / FOR THE VEHICLES IN YOUR GARAGE
From Everyday Cars to 24V Work Vehicles.
The tester is designed for compatible 12V and 24V vehicle DC electrical systems. That makes it useful across a wide variety of vehicle maintenance situations, from a personal car to a work truck or camper.
The tool is powered from a compatible vehicle battery. With the probe connected, you can examine accessible points, interpret the LCD and polarity indicators, then follow the specific diagnostic procedure for your vehicle or component.
01
Connect the battery clampsAttach the red and black leads to the correct battery terminals as directed by the manual.
02
Choose a suitable test pointUse the probe on an appropriate terminal or wire for a voltage or polarity check.
03
Read and narrow down the issueObserve the voltage reading, positive/negative status and other test results.
04
Use the dedicated function when neededTest compatible components or relays according to their wiring and ratings.
08 / PICK YOUR WORKSHOP LOOK
Three Finishes. The Same Diagnostic Approach.
The storefront currently offers Red, Blue and Black body colors. Choose your preferred finish in the product selector before checkout.
Red
The bold red edition featured in the original demonstration images.
Blue
A bright workshop-blue alternative.
Black
A clean, understated dark finish.
09 / THE CORE GEAR FOR CIRCUIT TESTING
The Probe, Power Leads and Relay Testing in One Kit.
The seller lists a circuit and relay tester, long power cable, red and black battery clamps, probe tip and user manual. The all-in-one setup helps keep the essentials together for your next troubleshooting session.
🔧 Probe Tool🔴⚫ Battery Clamps〰️ Long Cable
10 / CHOOSE YOUR TOOLBOX SETUP
One for Your Garage—or More for the Team.
Choose the color and the quantity that fit your needs. The store lists individual and multiple-unit bundles, while the actual purchase selector controls the final price and available combinations.
Buy 1One tester kit
For your garage, shop or personal vehicle maintenance tools.
Buy 2Extra 10% off listed bundle
Two tools for separate technicians or work locations.
Buy 3Extra 15% off listed bundle
Three kits for workshop teams or multiple toolboxes.
PRODUCT HIGHLIGHTS
Three Diagnostic Jobs. One Practical Probe.
📟
Voltage & Polarity Checks
See DC voltage on the backlit display and identify power or ground.
⚡
Compatible Component Testing
Supply positive or negative power to appropriately rated parts for diagnosis.
🔌
Integrated Relay Testing
Check selected 4-pin and 5-pin relay configurations with the built-in sockets.
TECHNICAL SPECIFICATIONS
The Details Behind the Diagnostic Tool.
Product Type
3-in-1 Automotive Power Circuit Probe & Relay Tester
Test Functions
DC voltage, polarity, continuity, compatible component activation and relay checks
DC Voltage Range
3.5–36V, seller-listed
Vehicle Electrical Systems
Compatible 12V / 24V DC systems
Relay Configurations
Selected common 4-pin and 5-pin automotive relays
Display
Backlit LCD digital voltage readout with red/green polarity indicators
Work Lights
Dual LED lights positioned near the probe tip
Current & Protection
Seller lists 1–8A and integrated overload protection up to approximately 8A
Operating Conditions
Approx. −10°C to 60°C; relative humidity ≤80%, seller-listed
Power Source
Connected compatible vehicle battery through red/black clamps
Color Options
Red / Blue / Black
Package Contents
1 tester, 1 long power cable, red and black battery clamps, probe tip and manual, as listed
Yes. The seller specifies use with compatible 12V and 24V automotive DC systems, with a listed DC measurement range of 3.5–36V.
Does it display the actual circuit voltage?
Yes. The backlit LCD displays DC voltage, and the red and green indicators help distinguish positive power from ground.
Can it test 4-pin and 5-pin relays?
The integrated sockets support selected common four- and five-pin automotive relay configurations. Check each relay's diagram and rating before testing.
Can it supply power to a fan, horn or light?
It can supply positive or negative battery power through the probe for suitably rated DC components. Always identify the correct terminal and verify the manufacturer's current and wiring specifications before activating anything.
Does the tester need separate batteries?
The original listing states that it receives power from the connected vehicle battery through its red and black clamps.
Does it include a flashlight?
The body incorporates two LED work lights near the probe tip to help illuminate wiring and terminals.
Is this the same as an OBD2 code scanner?
No. It is a handheld circuit probe and relay testing tool, not an OBD code reader or ECU programming device.
Can I use it on household electrical outlets?
No. It is designed for compatible vehicle DC circuits only, not household AC mains voltage.
What comes with the purchase?
The seller lists one circuit and relay tester, a long power cable, red and black battery clamps, a probe tip and a user manual for each single kit.
Which colors and bundle options are available?
The storefront lists Red, Blue and Black with Buy 1, Buy 2 and Buy 3 quantity options. Choose the final configuration in the product selector.
GET CLEARER ANSWERS BEFORE YOUR NEXT REPAIR
Find the Circuit Problem. Make the Repair Count.
One handheld tester for voltage, polarity, compatible component checks and relay diagnostics. Add a more organized way to troubleshoot vehicle electrical problems to your toolbox.
