Neoteck 1-72V DC Power Circuit Probe Tester with 0-8A Current Mode and LCD — Open-Box, 15% Off

1-72V DC Testing with Clear Readout:Neoteck power circuit probe tester operates from a 3-36V DC power supply and measures 1-72V DC test voltage and 0-8A DC current with 0.1V/0.1A resolution. Accuracy reaches ±(1% + 3 digits) for voltage and ±(2% + 2 digits) for current. The LCD also displays supply voltage at startup, helping you check the power source before testing. This automotive electrical tester is for DC systems only-DO NOT use with AC power or test AC voltage Find Faults & Power Components: More than a basic circuit tester automotive tool, it checks DC voltage, polarity, continuity, grounds, short circuits, diodes, switches and relays, while allowing positive or negative power to be applied through the probe to test compatible components. Use this automotive relay tester to help determine whether the fault comes from a component or its circuit, making electrical troubleshooting faster and more efficient Overload Protection for Safer Testing:When current exceeds 8A, the resettable circuit breaker automatically interrupts the circuit to help reduce potential damage from overloads or short circuits. The power probe circuit tester displays “OL” during overload conditions, with an audible warning in current mode; Test voltage above 72V DC also triggers an overvoltage warning. Added protection makes this probe tester especially useful when activating components or diagnosing unknown electrical faults See & Hear Circuit Status: Get fast, intuitive feedback while troubleshooting. This car electrical tester features an LCD for clear voltage/current readings, while dual LED indicators provide instant polarity feedback—red for positive and green for negative. An audible buzzer provides additional alerts during applicable tests and overload conditions, helping you identify circuit status with this test probe even when working where the display is difficult to see 14.7FT Reach for Whole-Vehicle Testing: The 14.7 ft (4.5 m) cable gives Neoteck circuit probe tester extended reach from the battery to rear lights, trailer wiring and other distant test points for easier single-person troubleshooting. The 55 mm probe reaches deep connectors and tight spaces, while the built-in work light helps illuminate dark areas under dashboards and inside engine compartments—making this power circuit probe practical for whole-vehicle electrical checks Important Use Notes: This automotive electrical system tester is designed for DC electrical systems only. Before each use, self-check the power probe tester by connecting the red clamp to battery positive (+) and the large black clamp to negative (–). During component testing, disconnect immediately if the LED changes from red to green and the buzzer sounds, as the component may be shorted, damaged or drawing excessive current Built for DIYers & Auto Technicians: From dead lights and blown fuses to faulty wiring, poor grounds and component checks,Neoteck auto circuit tester is built for everyday vehicle electrical troubleshooting. Use the power probe around engine bays, fuse boxes, dashboards, rear lights, trailer wiring and workbenches for repairs, accessory installations and component testing. A practical choice for DIY car owners, automotive technicians, repair shops and vehicle electrical projects Product Highlights
Clear LCD Display & Visual Polarity Indication
The tester features a high‑contrast LCD screen for easy voltage readings. Dual‑color LED indicators show polarity at a glance:
Red LED + blue LCD backlight = positive polarity / forward activation.
Green LED + same blue backlight = negative polarity / reverse activation.
Voltage reading remains displayed in both cases.

Built-in Overcurrent Protection (8A Trip)
An internal self-resetting circuit breaker trips automatically when current exceeds 8A, preventing short-circuit damage to the wiring or the tester. For voltages above 72V DC, the unit protects both the user and the instrument, ensuring safe operation.

Continuity Test – Essential for Troubleshooting
Quickly check circuit continuity to identify broken wires, open circuits, faulty switches, or relay failures. This basic but vital function speeds up diagnosis and repair of electrical faults.

Multi-Function Diagnostic Tool
Designed for vehicle electrical system diagnosis, the probe supports:
Voltage measurement
Component activation (drive test)
Diode testing
Ground/earth detection
Short‑circuit tracing and location
Polarity (positive/negative) identification

Wide Vehicle Compatibility
With a 14.7 ft (4.5 m) cable, the probe works on all 1V–72V DC automotive electrical systems – suitable for ATVs, vans, commercial vehicles, electric scooters, motorcycles, tricycles, and more. One tool covers your entire fleet.

Dual Operating Modes
Voltage mode (default) and Current mode – switch easily by pressing the small black round button.
Resolution: 0.1V / 0.1A.
Supply via dual clips: 3–36V DC
Test voltage range: 1–72V DC
Test current range: 0–8A DC
Powered directly from the vehicle battery – no extra batteries needed.

Overload Protection & Buzzer Alarm
Voltage mode: If voltage exceeds 72V DC, the LCD shows “OL” and the red LED lights up as an over-voltage warning.
Current mode: Over-current triggers “OL” on the display and a buzzer alarm. If current exceeds 8A, the circuit automatically disconnects to prevent damage; disconnection time varies with the load current.

Specifications
Supply Voltage (via clips):3–36V DC
Test Voltage Range:1–72V DC
Voltage Measurement Accuracy:±(1% + 3 digits)
DC Current Range:0–8A
Current Measurement Accuracy:±(2% + 2 digits)
Operating Temperature:0–50°C
Operating Humidity:< 80% RH
Over-voltage Alarm Threshold:> 72V DC
Main Functions:Voltage measurement, polarity check, continuity test, offline/online component testing, short-circuit/ground fault detection

Important Precautions
1.Never use on AC power sources or for AC voltage testing.
2.Only use within the specified limits: supply voltage <36V DC, test voltage <72V DC.
3.In voltage mode, the tester will show an over‑voltage warning if the test voltage exceeds 72V DC.
4.Self-test before each use: Connect the red clip to positive and the large black clip to negative to verify the unit is working correctly.
5.Off-line component test: If the LED changes from red to green and the buzzer sounds during an off-line test, immediately stop testing. This indicates a possible short circuit, component failure, or that the load exceeds the tester’s current supply capability (overload protection activated).
6. Power-on behavior: For the first few seconds after power‑up, the display shows the battery supply voltage, then resets to “000”. During testing, the actual test voltage is shown.