Best Godiag in 2026

💡 Comprehensive Kit, Incredible Savings: Say goodbye to expensive individual purchases! Our probe tester comes with a wide range of accessories at a fraction of the cost. You'll save big while enjoying the convenience of having everything you need in one comprehensive kit.

🚗 Suitable for All Vehicles: Whether you're working on cars, motorcycles, trucks, or even ships and tractors, our tester's DC 6-40v compatibility makes it the ideal solution for diagnosing electrical systems in any vehicle.

🔒 Safety First: Your safety is paramount to us. The circuit tester features a reverse connection protection circuit, providing peace of mind during positive and negative line judgment. Plus, the built-in 10 amp circuit breaker ensures your equipment is safeguarded from excessive current.

【Easy-to-use multi-function probe tester】The main functions of this power circuit probe tester include voltage and polarity test, continuity test, signal circuit test, current test, circuit breaker protection, relay test, injector test and cleaning, component activation and testing, poor ground testing, tracking and locating shorts, etc. It beeps to indicate the result while testing and is the most versatile and practical dedicated circuit repair test tool its users have ever had.

【Best Electrical Tester】This electrical tester can supply power to electrical components, with reverse connection protection circuit, it is an advanced test tool for positive and negative line judgment. It shortens the diagnostic time of all 6 to 40 volt vehicle electrical systems, and is suitable for DC 6-40v cars, motorcycles, trucks, buses, construction vehicles, ships, tractors, mining vehicles and other vehicles that use DC circuits.

【Quick Self Test & Relay Test & Circuit Breaker Protection】GODIAG GT101 circuit tester has quick self test function, which can ensure the tester is in good condition before use. The GT101 Probe Tester Kit can quickly detect whether the relay is normal. The tool has a built-in 10 amp circuit breaker, the input current can be reversed to form a loop power supply, and it automatically trips when the current exceeds 20A, protecting the equipment and extending its life.

🚘【MOST PRACTICAL CIRCUIT TESTER】With the GT103 probe tester, you can test for continuity/polarity/voltage and ground signals/Short&Open Circuit. And most importantly, you can also use it to check switches, relays and the on-off of diodes, fuses and circuits, activating electronic Component. It is the best electrical tester for reducing diagnostic time in all 6-30 volt vehicle electrical systems.

🚘【PORTABLE AND QUICK TEST ELECTRICAL TESTER】With the GT103 car circuit tester tool, you can determine at a glance whether a circuit is positive, negative, short or open; Test for continuity with its built-in auxiliary ground lead; can also easily test the vehicle's headlights, turn signals, lift windows, sunroofs and others, helping you to find out whether it is a circuit problem or a component damage.

🚘【CAR FUEL INJECTOR TESTER & CLEANER】Free DIY Injector Cleaning Adapter Kit included with the package! When the vehicle has difficulty in starting, acceleration and fuel consumption, etc, it is necessary to check the fuel injector. When the injector is clogged, you can also use it to save expensive nozzles, this kit is easily to clean most car motorcycle fuel injectors. Efficient & Labor-free, Save your money!

🚗【Easy Operation】Unroll the leads, clamp the red clip of the power circuit probe tester to the positive terminal of the vehicle's battery and the black clip to the negative terminal of the vehicle's battery. After a simple hook-up of the circuit tracer to the vehicle's battery, automotive technician can conduct a positive or negative battery current to the tip by rocking the power switch forward or backward.

🚗【Short Finder and Locating Test Light】The circuit tester is suitable for diagnostic in all 6V to 30V DC vehicle electrical systems. It can check switches, relays and the on-off of diodes, fuses and circuits, which can help you reduce diagnostic time in automotive electrical systems. In most cases, short circuit or instant overload of component will lead to blown fuse or circuit breaker tripping.This power probe tester can assist you tracing problem wires and locating breaking points.

🚗【Quick Self-Test & Overload Protection】Before you test a circuit or component, the Power Circuit Tester can perform a quick self-test to ensure your tool is in good condition. Equipped with overload protection, when the current exceeds 10A, the circuit tester will disconnect the current automatically and give you a buzzer prompt. You can test poor ground contacts directly. Note: This circuit tester can not be used for 110/220V systems, it is only used for DC 6-30V systems.

【Easy to Operate】After scanning code to download Free Battery Monitor App, connecting Bluetooth and open app, you can know battery or battery load’s condition and check charging and starting system without code. Simply have a check before you go out without hassles on the road.

【Wide Compatible】Bluetooth 4.0 battery assistant is suitable for DIY users, battery service station, garage/workshop, tool store, vehicle/battery manufacturer, including Cars, SUVs, Boats, RVs, Motorcycles, Travel Trailers, Generator, Lawn mower (Just for 6-20V VRLA battery).

【Automatic Reminder】The APP of Battery Monitor 12v will send the battery status to the notification bar (on your phone) when enter bluetooth range (4-5m). Other products are more trouble, need to use traditional methods to connect to computer and then could download your car battery iformation.

DIGITAL CIRCUIT BREAKER FINDER for a panel corresponding to the circuit to which an electrical outlet or fixture is connected

GFCI OUTLET TESTER includes a transmitter connected to the electrical outlet or fixture and a receiver to locate the correct breaker

VISUAL AND AUDIBLE INDICATORS are delivered when the correct breaker has been located

Circuit Breaker Tool Kit can help quickly and accurately locate the correct circuit breaker in a panel corresponding to the circuit to which an electrical outlet or fixture is connected

Digital Circuit Breaker Finder with GFCI Outlet Tester (Cat. No. ET310) receiver delivers clear visual and audible indications when the correct breaker has been located

Operates on 90-120V AC circuits

Voltbeat technology and continuous self-test - so you always know it is working

Upon detection, tip glows and beeper sounds

CAT IV 1000 V for added protection

This circuit breaker finder can quickly and accurately locate the correct circuit breaker in a panel corresponding to the circuit to which an electrical outlet or fixture is connected

GFCI tester consists of two parts: a Transmitter connected to the electrical outlet or fixture, and a Receiver used to scan the panel to locate the correct breaker

Receiver delivers clear visual and audible indications when the correct breaker has been located

Extended Remote Range: Wireless thermometer with dual probes optimizes its wireless range from up to 500FT to monitor your food or oven/grill/smoker temperatures, enabling you to enjoy the company of your guests without continuously excuse yourself

Hassle-Free Setup: With no synchronization required, say goodbye to the tedious setup steps; Upgraded receiver clearly displays both food and oven temps simultaneously; Backlit display allows use in low-light condition

Kitchen Timer: Food cooking smoker thermometer features count up and countdown setting that is perfect for long-time cooking or vegetable side dishes; Receiver will beep and flash once reaches preset temperature

Versatile Digital Multimeter - Accurately measures AC/DC Current, AC/DC Voltage, Capacitance, Frequency, Duty Cycle, Resistance, Diode, Continuity and Temperature

Thoughtful Design - Support Data Hold, Large LCD Backlit Screen, Auto Shut-off and Hanging Magnet, and Kickstand make the process of measurements easier. Professional level is reflected in some features include Auto-Ranging capability, and True RMS for measuring both AC Current and Voltage

Suitable For Many Occasions - This Multimeter is a golden partner to help to troubleshoot a variety of automotive and household electrical problems safely and accurately.

Accuracy: With 3/s Sampling Speed, this multimeter can accurately measure AC/DC Voltage, DC current (Not for AC current), Continuity, Amp, Resistance and Diode

Widely Used: This meter is capable of testing Household Outlets, Batteries (including 12V Automotive Battery), Continuity, Electrical Circuit, Fuses, Wires, Light Bulbs and Water Heaters

Multi-Feature: Large Backlight LCD Display with 3 ½ digits (1999 count) delivers your results clearly in dim light areas; Data Hold button holds a reading; Built-in Stand allows for hand free use; Low Battery Indication and Continuity Buzzer

VERSATILE DIGITAL MULTIMETER - Accurately measures AC/DC Voltage, DC Current, Resistance, and Diode. This Multimeter is a really useful tool for solving industrial and household electrical issues. Suitable for Household Outlets, Fuses, Batteries (including Vehicles), Automotive Circuit Troubleshooting, Charging System, Testing electronics in Cars etc.

TROUBLESHOOTING WITH Accuracy - This Multimeter has a sampling speed of 2 times per second; Built-in a backlight LCD display with 3 ½ digits (1999 count) 0.6”, and high polarity including negative and positive readings.

ENSURES SAFETY - Double ceramic fuse is anti-burn and protects from overloading.The silicone cover is able to protect the multimeter from failing damage and prevent electric shocks. And low battery indication will be displayed when battery power is low.

165ft Long Range Model: 100% WIRE-FREE that's perfect for outdoor cooking. The first truly wireless smart meat thermometer. Monitor your cook using the FREE app available for iOS (12.2.0 and later) / Android (8.0 and later) smart phones and tablets. Smart phone not included in the package.

2 Sensors, 1 Probe: Dual temperature sensors can monitor internal meat temperature up to 212°F and ambient / external temperature up to 527°F simultaneously. Dishwasher safe.

Guided Cook System: Walks you through every step of the cooking process to guarantee perfect and consistent results. You can also set up custom alerts / notifications based on temperature and/or time. Advanced Estimator Algorithm: Can estimate how long to cook and rest your food to help plan your meal and manage your time.

SAFETY FIRST: It will send out multiple alarms through sound and light. When the voltage is detected, the tip will send out red light and beep. When the higher the sensed voltage is, or the closer it is to the voltage source, it beeps at a higher frequency. At the same time, the screen will be red or green, red means high voltage and live wire are detected, green means low voltage and null wire are detected.

NON-CONTACT: With NCV inductive probe for AC voltage; Just place the tip near a terminal strip, outlet, or supply cord. When the tip glows red and the pen beeps, you know there's voltage present. The live wire detector can automatically detect the live or neutral wire. Ideal for breakpoint Test. Handy circuit tester for electricians, homeowners.

DUAL RANGE: Detects standard and low voltage (12-1000V AC / 48-1000V AC) for more sensitive and flexible measurements. Press the S button to adjust sensitivity and adapt low range for doorbells, thermostats, irrigation wiring etc.; The NCV sensor automatically recognizes the voltage and displays it on the bar graph.

A SAFEGUARD OF HOUSEHOLD APPLIANCES: Built in Premium LCD Digital Display with Black Character, this test can immediately detect and measure the current voltage by connecting to the switch plug or the other kind of wall socket. It allows you to check on power health of devices for preventing the low voltage damage to your valuable household appliances.

WIDE MEASURING RANGE & LOW CONSUMPTION: Measuring range: AC80-300V, Consume Power: Less than 1W(about every 1200hours consume 1 kilowatt-hour).2 Prongs Flat US Plug with Compact Size Design is ideally applicable to measuring the AC voltage in family, office space, industrial and mining enterprises, etc.

ADJUSTABLE POTENTIOMETER: There’s an Interior Potentiometer for accuracy adjustment. Just use screwdriver to open the outer coving and adjust the potentiometer with small size screw driver. Adjust potentiometer in counter-clockwise when it’s excessive voltage, but if display voltage is too low, adjust potentiometer in clockwise.

Power Probe III Circuit Tester is designed to be a multi-functional electrical circuit tester

Quickly and easily diagnose automotive electrical systems

Features: Digital Voltmeter, Min/Max, Audible Circuit Monitoring, 4mm Standard Banana Jack and Auxiliary Ground for component testing. Works with 12 - 24 VDC Systems.

OTC's Deluxe Compression Tester Kit offers a complete package for compression testing on gasoline engines and comes complete with standard and specialty adapters

Kit includes the deep well connector used on recessed plug well style heads and the new Ford Triton engine adapter using 16 mm thread plugs

Adapters work on both flat and tapered seat plugs; corrosion resistant nickel plated finish protects metal components

CL120 Clamp Meter measure AC current via the clamp, and AC/DC voltage, resistance and continuity via test leads

Meter has backlit LCD for ease of viewing in low light and is CAT III 600V, Class 2 Double Insulated

RT210 detects the most common wiring problems in standard and GFCI receptacles

Constructed of black 600d Nylon

Has a heavy-duty PVC zipper and zinc alloy zipper tag

Convenient storage for meters, testers and tools

GFCI Tester detects the most common wiring problems in standard and GFCI receptacles

Works on GFCI outlets and confirms operation of the ground fault protective device

Built to withstand a 6.6-foot (2m) drop

Outlet tester's light sequence on receptacle tester indicates correct/incorrect wiring

Receptacle tester conforms to UL Std 1436, Certified to CSA Std C22.2 #160

Operating temp: 32-degrees F to 140-degrees F (0-degrees C to 40-degrees C)

Kit contains+B2:H150 a non-contact voltage tester and receptacle tester

Dual range NCVT-2P automatically detects and indicates low voltage range and standard voltage (48-1000V AC)

NCVT-2P provides non-contact detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires

LARGE CLEAR LCD READOUT on receptacle tester to instantly view results without the need to look at a chart to understand results

TEST GFCI TRIP TIME IN SECONDS to find out if the trip breaker is functioning

DETECT WIRING FAULTS of open ground, open neutral, open hot, dual open (neutral and ground), reversed hot/ground, and reversed hot/neutral

Power Probe III Circuit Tester is designed to be a multi-functional electrical circuit tester

Quickly and easily diagnose automotive electrical systems

Features: Digital Voltmeter, Min/Max, Audible Circuit Monitoring, 4mm Standard Banana Jack and Auxiliary Ground for component testing. Works with 12 - 24 VDC Systems.

Automatically measures volts ac and volts dc with precise digital resolution

Displays resistance to 1000Ω

Easy and accurate OpenJaw current measurement

Leading Manufacturer Of High-Quality Products

International Renown For Our Diverse Range Of Award-Winning Products

Fully Equipped With State-Of-The-Art Technology

Ideal kit for testing vacuum lines and components

Accurately tests low-pressure fuel systems

Quickly diagnose internal engine problems such as bad rings valves and leaking head gaskets

The max wide that alligator clips open is 0.4"/10mm. Voltage: 1500V; Current:15A. 38.2 inches wire with nice silicone insulation cover and the alligator clips made of copper. The clips make it easier to grasp the item you are trying to read, allows hands-free testing, great for remote spaces.

The wide for alligator test clips robust enough to be useful for testing circuits on your vintage cars, trucks and motorcycle, etc

This really is a great set of Jumper or Tester wires. High quality thick cables. Excellent leads that can be used to do a variety of electronic testing. It will works as intended in conducting electricity!

➤【Wide Application】 Professional automotive circuit tester/circuit test light with 2.6-32V DC voltage testing range, ideal for checking various vehicles electrical circuits, quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, fuse connections, also for testing other 2.6-32v DC wirings and circuits.

➤【Computer Safe Accurate LED Digital Reading】 Digital LED voltage display for accurate volt readouts, .1 v resolution ratio with 0.3v accuracy. Compared with LCD, clear&visible LED reading display for day and night. LED circuits board with micro current than traditional test lights, more secure and burn-resistant to automotive computer board.

➤【Bidirectional Voltage Testing】 You can attach the alligator clamp either to negative or positive ground, there is also a light emitting diode on the circuit board for polarity indication, red light indicates positive polarity and green light indicates negative polarity.