Products

This DUOYI battery tester helps you assess the health of 12V and 24V lead-acid batteries, along with cranking and charging systems in vehicles. It's a straightforward tool for maintaining your car's electrical components without needing advanced expertise. For everyday use, this tester is ideal when you're preparing for a long drive or noticing dim headlights. Simply connect it to your battery to quickly check voltage, identify potential issues, and ensure your vehicle starts reliably, saving time and preventing roadside surprises. Features a 3.2-inch color LCD screen with touch-tone controls for easy reading and operation in various lighting conditions. Uses the 4-wire Kelvin method for accurate measurements, reducing errors in testing. Includes safety protections like polar reversal and over-voltage detection to prevent damage during use. Supports 15 languages, making it accessible for users worldwide. Compact design with loose lead detection for hassle-free connections. This tester fits well for car owners, DIY enthusiasts, or small fleet managers looking for a reliable way to monitor vehicle batteries and extend their lifespan through regular checks.

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The DUOYI Battery Tester is a straightforward device for monitoring car battery health during routine maintenance. It provides essential readings to help you identify potential issues early, making it easier to keep your vehicle reliable. For everyday drivers, this tester is useful when preparing for a long drive or troubleshooting a slow-starting engine. Simply connect it to your battery to get quick insights into its condition, allowing you to decide if a replacement or charge is needed without visiting a mechanic. Measures cold cranking amps, battery resistance, voltage, and performs life analysis Evaluates engine system performance during startup Assesses charging system output for proper functionality Tests maximum load capacity to simulate real-world demands Works with various lead-acid batteries, including flooded, EFB, GEL, AGM spiral, and AGM flat plate types This tool fits well for individual car owners or small fleet managers seeking a simple way to extend battery life and prevent roadside problems through regular checks.

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The DUOYI Brake Fluid Tester is a straightforward tool for monitoring brake fluid quality in vehicles, helping with routine maintenance checks. Ideal for everyday drivers or DIY enthusiasts, use it before long trips or during seasonal vehicle inspections to quickly assess fluid condition and avoid potential issues like reduced braking efficiency. Folding elbow design for easy access in tight engine spaces Metal sensitive probe that provides accurate readings and resists oil and oxidation Light and buzzer alarm to alert on fluid status 2-inch screen for clear, intelligent display of results Compact size with a bend length of about 250mm, making it easy to handle with one hand This tester fits well for those who prefer simple, reliable tools for at-home vehicle care, offering practical convenience without complexity.

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The DUOYI Brake Fluid Tester helps you monitor the water content in your vehicle's brake fluid, supporting routine maintenance to keep your car running safely. In everyday scenarios, such as preparing for a long road trip or during seasonal vehicle checks, this tester allows you to quickly evaluate brake fluid condition and decide if replacement is needed, making it a practical choice for both DIY enthusiasts and professional mechanics. Built-in printer that outputs test reports on the spot for clear, detailed records. High-precision probe for accurate water content detection. Powered by a standard 12V automotive battery, ensuring compatibility with most vehicles. Simple operation with straightforward controls, suitable for users without advanced technical skills. Operates in a wide temperature range from 0 to 50 degrees Celsius for versatile use. This tool fits well into regular vehicle upkeep routines, offering a reliable way to address potential brake issues before they escalate.

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This brake fluid testing device is a practical tool for checking the condition of your car's brake fluid, helping you maintain vehicle safety during routine checks. In everyday scenarios, such as preparing for a road trip or performing regular maintenance, this device allows you to quickly verify if your brake fluid is still effective, potentially identifying issues before they lead to problems. Compatible with DOT3, DOT4, DOT5, DOT5.1, and Super DOT4 brake fluids for versatile use. Delivers results in about 60 seconds with a sensitive probe for efficient testing. Features a high-definition backlit display, making it easy to read in various lighting conditions. Includes a shockproof leather shell for added durability during transport and storage. Operates at a test voltage of 12.5V within a working temperature of 0°C to 50°C. Light specifications include compact dimensions of 245x93x38mm, making it easy to store in your toolkit. This device fits well for DIY car enthusiasts and everyday drivers looking to handle basic maintenance tasks confidently.

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The DUOYI Cable Tester is a practical tool designed for detecting wiring shorts, breaks, and tracking cables without damaging insulation. It includes a transmitter and receiver to simplify wire identification in various settings. For technicians and DIY enthusiasts, this device proves useful when troubleshooting electrical systems, such as identifying faults in home wiring or network cables. It helps locate issues quickly in noisy environments, enhancing accuracy during inspections. Checks for cable break points and short circuits without stripping insulation Features a transmitter and receiver for easy wire tracking Includes a 3.5mm plug headset to improve audio clarity in loud areas Equipped with a 24.8cm (9.76 inch) long probe for convenient access to hard-to-reach spots Operates with straightforward controls, making it accessible for beginners Requires a 9V battery for power, allowing portable use Light specifications include a compact design suitable for everyday carry. This cable tester fits well for anyone needing reliable wire diagnostics in electrical maintenance tasks.

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The DUOYI Car Battery Tester is a straightforward tool for evaluating lead-acid batteries in everyday vehicles, helping you monitor key performance aspects without needing professional help. For routine maintenance, use it to check your car's battery before trips or during seasonal changes, ensuring it starts reliably and charges properly to avoid stranding issues. Assesses battery lifetime, starting capability, charging status, and electrical load conditions Measures CCA values and internal resistance to indicate overall battery health Provides clear voltage readings and status updates like good, OK, attention, or replace Supports 12V and 24V systems with a simple 4-wire connection for accurate results Displays health and charge percentages for easy interpretation This tester fits well for car owners who perform their own checks, offering practical insights into battery performance for safer, more dependable driving experiences.

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This OBDII detector simplifies car maintenance by allowing you to check vehicle diagnostics without direct probing. It's designed for straightforward use with your existing scan tools, making routine checks more efficient. In everyday scenarios, such as preparing for an emissions test or troubleshooting engine issues, this tool lets you quickly verify the OBDII connector's integrity. Just plug it in to identify power or ground problems, saving time and reducing the risk of damage during inspections. No probing required; directly access the 16 pins while your scan tool is connected. Built-in LEDs provide instant visual feedback on power or ground issues. Mimics the standard OBDII layout for easy reference and accurate troubleshooting. Offers safe access to chassis ground and power via 4mm banana sockets. Compatible with various banana plugs, including those with safety sheaths, for versatile use. This detector fits well for DIY car enthusiasts and mechanics who perform frequent vehicle checks, providing a practical way to ensure reliable diagnostics without unnecessary complications.

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This device helps with routine checks on lead-acid car batteries, making maintenance straightforward for everyday vehicle owners. It provides essential readings for battery health, including starting, charging, and loading conditions, without requiring specialized tools. For daily use, such as before a long drive or during routine inspections, this tester simplifies verifying your car's battery status. Just connect it to assess if the battery is holding charge properly, helping you avoid unexpected breakdowns by identifying issues early in a quick, hassle-free process. Utilizes the 4-wire Kelvin method for accurate voltage and resistance measurements, ensuring reliable data collection. Features a large LCD screen for clear readings, with sound and light alerts to guide users through the process. Includes built-in protections like polar reversal and over-voltage safeguards to prevent damage during testing. Easy operation with no complex setup, ideal for quick checks in various settings. Compact design fits neatly in a toolbox, making it portable for on-the-go use. This tool suits anyone involved in vehicle maintenance, from DIY enthusiasts to professionals, by offering practical insights into battery performance for safer, more efficient car care.

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The DUOYI Digital Manifold Gauge offers a straightforward tool for monitoring and maintaining home air conditioning systems. It's designed for users who want reliable readings without complex equipment. For everyday use, this gauge helps during routine AC checks, like detecting refrigerant leaks or ensuring proper pressure levels before summer heatwaves. Simply connect it to your AC unit to get real-time data on pressure and temperature, making it easier to identify issues early and avoid costly repairs. Simultaneous display of pressure, evaporation, and condensation temperatures for accurate diagnostics. Built-in support for 24 common refrigerants, allowing versatile use across different systems. Pressure leak testing with initial, real-time, and differential measurements over set times. Vacuum operation showing both vacuum degree and pressure readings in one view. Easy unit selection from options like Kpa, Bar, or Psi for global compatibility. This gauge fits well for DIY homeowners or small maintenance tasks, providing practical insights without overwhelming technical details.

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The DUOYI Ground Resistance Tester is a practical device for measuring ground resistance and voltage, helping maintain electrical safety in everyday settings. In a home environment, it allows you to quickly assess grounding quality in wiring or outdoor installations, potentially spotting issues like poor connections that could affect appliance performance or safety. Multiple resistance ranges from 2 ohms to 2000 ohms for versatile testing needs Measures AC voltage up to 600V and DC up to 1500V for comprehensive checks Automatic shutdown after inactivity to conserve battery life Clear LCD display with backlight for easy reading in various lighting conditions Compact dimensions of 173x125x68mm for convenient storage and transport This tester fits well for homeowners, electricians, or anyone performing routine electrical inspections to ensure reliable and safe operations in residential or light commercial settings.

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The DUOYI Ground Resistance Tester is a practical device for measuring earth resistance in home electrical systems, helping to identify potential safety issues. In everyday scenarios, use this tester to check grounding on appliances or wiring during home maintenance, even in environments with background noise, ensuring more reliable results for peace of mind. Employs FFT technology for stable measurements in noisy settings, reducing errors from interference. Features an LCD display with backlight, making it easy to read results in low-light areas like basements or garages. Includes Rk function to eliminate residual resistance on test leads for accurate readings. Offers automatic power-off after inactivity and a battery check to conserve energy during routine checks. Stores up to 1000 data points, allowing you to track measurements over time. With its straightforward design, this tester fits well for homeowners or DIY enthusiasts performing basic electrical safety assessments.

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The DUOYI Leak Detector is a practical tool for identifying leaks in everyday settings, such as homes and vehicles. It uses a transmitter and receiver system to pinpoint issues in enclosed spaces. In a typical use case, place the transmitter in a sealed container or area, then use the receiver to scan along potential leak points. Adjust the sensitivity as needed and listen through headphones for audio cues—the sound intensifies near leaks, helping you locate and address problems like faulty seals in cars or household pipes before they worsen. Adjustable sensitivity allows for precise detection in various environments. Includes a 420mm probe for reaching tight or hard-to-access areas. Operates with headphones for clear audio feedback on leak proximity. Versatile for testing cabins, refrigerators, pipes, and sealed compartments. Simple operation with step-by-step adjustments for accurate results. This leak detector fits well for DIY enthusiasts and maintenance workers seeking a reliable way to perform routine checks and prevent potential damage from undetected leaks.

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This DUOYI leak detector helps identify refrigerant leaks in car air conditioning systems during routine checks. It's a straightforward tool designed for everyday vehicle maintenance, allowing users to spot issues before they escalate. For instance, if you're a car owner noticing reduced AC performance, this detector can be used to scan components like hoses and evaporators, pinpointing leaks with audible and visual cues for a more efficient troubleshooting process. Audible signal and visual indicator for clear leak detection Adjustable sensitivity down to 14 grams per year for precise results Fast 6-second warm-up to minimize wait time Flexible 23cm goose neck probe for accessing tight spaces Operates on 4 AAA batteries with sound and light alarms This device fits well into basic automotive upkeep routines, offering a practical option for DIY enthusiasts or mechanics looking to maintain vehicle efficiency without complex equipment.

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The DUOYI ground resistance meter offers a practical tool for checking earth resistance in everyday home maintenance. It's designed with improvements for better functionality, making it easier to use for various electrical tests. In a typical scenario, homeowners or electricians can use this meter to verify ground resistance in power systems or lightning conductors, helping to identify potential safety issues before they escalate, such as during home wiring inspections or outdoor installations. Measures ground resistance from 0.01Ω to 2000Ω with 0.01Ω resolution for precise readings. Dust and wet proof construction, suitable for both indoor and outdoor environments. Includes data hold function and low battery warning for reliable operation. Tests AC voltage up to 30V, along with low resistance values. Simple interface with selectable ranges for quick adjustments. This meter fits well for those involved in basic electrical maintenance, providing the accuracy needed for safe and effective checks in residential settings.

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The DUOYI Meter serves as a practical tool for testing and maintaining vehicle air conditioning systems, helping users identify and address common issues like refrigerant leaks or pressure imbalances. In everyday scenarios, such as routine vehicle maintenance or diagnosing why your car's AC isn't cooling properly, this meter allows for simultaneous pressure and temperature checks, providing clear data to guide repairs without needing multiple devices. Measures dual pressure and temperature for efficient diagnostics, with automatic unit conversions like Kpa to PSI. Includes a built-in database of 89 refrigerants to quickly reference evaporation temperatures and calculate superheat or subcooling. Features a large, backlit LCD screen for easy reading in various lighting conditions, enhancing usability during on-the-go repairs. Equipped with long-life valve switches and a standard 1/4-inch interface for reliable connections. Supports vacuum measurement to assess system integrity, helping detect leaks over time. Light specifications include a pressure range of 0-6000 Kpa and temperature range of -40 to 150°C, making it suitable for automotive technicians and DIY users seeking straightforward, accurate readings for their maintenance tasks.

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The DUOYI multimeter is a versatile tool for everyday car maintenance, offering reliable measurements for various electrical checks without unnecessary complexity. For routine car repairs, this multimeter helps diagnose issues like faulty wiring or battery problems. Imagine using it to test voltage in your vehicle's electrical system during a weekend DIY fix, ensuring everything runs smoothly before hitting the road. Measures AC/DC voltage, current, and resistance with straightforward accuracy. Features a large LCD display with backlight for clear readings in low-light conditions. Includes functions for diode testing, transistor checks, and motor speed analysis. Supports frequency and temperature measurements up to 1000°C for comprehensive diagnostics. Compact design with protective sleeve for easy handling during on-the-go repairs. This tool fits well for hobbyists and professional mechanics seeking a practical device for accurate, everyday automotive troubleshooting.

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The DUOYI multimeter serves as a reliable tool for handling everyday vehicle maintenance, offering essential measurements without unnecessary complexity. For instance, use it to quickly check your car's battery voltage before a long trip or measure AC/DC currents to diagnose faulty wiring, making routine checks more straightforward and efficient. Overload protection and mechanical safeguards to prevent damage during use Buzzer alarm for easy continuity testing, along with automatic shutdown to save battery life Versatile functions including resistance, frequency, duty ratio, and temperature measurement up to 1000°C High-precision soft plastic shell for better handling and protection Supports various modes like diode testing and speed/closing angle measurements for automotive applications Light specifications include DC voltage up to 1000V and resistance ranges from 200 ohms to 20M ohms, fitting neatly into a toolkit for DIY enthusiasts or mechanics seeking practical electrical diagnostics.

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The DUOYI pressure gauge is a practical tool for monitoring pressure in vehicles during home maintenance tasks. For everyday use, it's helpful for checking the vacuum degree in your car's intake manifold or brake system, allowing you to identify potential issues without a professional visit. Offers 0.3% FS accuracy and 0.1% linearity for consistent readings in routine checks. Supports multiple pressure units for intuitive data without manual conversions. Includes zero adjustment to ensure each measurement is precise and reliable. Can record up to 48 sets of data, making it easier to track changes over time. Compact at 6.5x17.5x3.5cm, it fits easily in a toolbox for on-the-go use. This gauge suits DIY car enthusiasts and home mechanics looking for a straightforward way to handle basic automotive diagnostics.

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The DUOYI Refrigerant Meter is a practical tool for monitoring and maintaining car air conditioning systems, focusing on essential pressure and vacuum checks. In everyday scenarios, such as preparing for a long drive or performing routine vehicle upkeep, this meter helps identify potential issues like leaks or improper refrigerant levels, allowing for timely adjustments without needing professional help right away. Detects vacuum pressure to ensure systems are properly sealed Identifies pressure leaks for early problem resolution Features a switchable refrigerant vacuum gauge for versatile use Monitors refrigerant operating conditions to maintain optimal performance Supports a pressure test range of 0 to 6000 Kpa for a variety of vehicle types This meter fits well for car owners and mechanics who handle their own maintenance, offering a straightforward way to keep AC systems running smoothly in daily use.

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The DUOYI Test Pen offers a straightforward way to check electrical systems in everyday vehicles. Designed for quick diagnostics, it helps identify issues like faulty wiring or low voltage without the need for complex setups. In daily use, such as during routine car maintenance or before a road trip, this test pen allows you to probe connections directly, saving time and reducing the risk of errors. For instance, it's useful for verifying battery health or testing fuses in your car, making troubleshooting more accessible for non-professionals. One-hand operation for easy handling during checks Direct probe testing without stripping wires, enhancing safety and efficiency Hook-type design for secure contact on metal parts Supports common voltages like 6V, 12V, and 24V Compact size of 33mm x 67mm x 270mm for portable storage This tool fits well into the toolkit of car enthusiasts or DIY mechanics, providing reliable assistance for basic electrical inspections without overwhelming complexity.

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The DUOYI Tester for Spark Plugs offers a straightforward way to check spark plug performance during vehicle upkeep. This device helps identify issues in 12V gasoline engines by simulating real-world conditions. In everyday scenarios, use it for routine maintenance on your car. For instance, if your engine is misfiring, connect the tester to compare two spark plugs simultaneously, allowing you to spot weak ignition without disassembling the engine. Two test holes for testing spark plugs side by side, enabling quick comparisons Adjustable frequency settings from 1000 to 6000 RPM to mimic various engine speeds Includes a power adapter for simple plug-and-play operation from standard outlets Compact design with built-in safety features, like a protective cover Lightweight at 354g for easy handling and storage This tester fits well for DIY vehicle owners who want to handle basic diagnostics at home, saving time and potential repair costs.

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The DUOYI tool is a practical electronic instrument designed for checking and maintaining car air conditioning systems, helping with installation, testing, and diagnostics. In everyday use, this tool assists mechanics or DIY enthusiasts in verifying refrigerant levels and detecting issues in car AC units. For instance, during a routine vehicle check, it allows you to measure pressure and temperature simultaneously, making it easier to identify problems like leaks or improper cooling without needing multiple devices. Simultaneous dual pressure and temperature measurements for accurate diagnostics. Built-in database of 89 refrigerants to quickly calculate subcooling and superheat values. Multi-unit switching for pressure and temperature, supporting various systems and preferences. Clear LCD display with backlight for easy reading in different lighting conditions. Durable construction with non-slip design for comfortable, reliable handling during extended use. This tool fits well for automotive technicians or car owners looking for a straightforward way to maintain AC performance and extend vehicle longevity through regular checks.

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The DUOYI tool offers a straightforward way to assess your car's lead-acid battery capacity during routine maintenance. In everyday scenarios, such as preparing for a road trip or troubleshooting a sluggish start, this device lets you quickly evaluate battery loading capacity and cranking ability, helping you identify potential issues before they strand you. Utilizes a four-wire Kelvin connection for precise measurements of internal resistance and capacity. Features an intuitive LCD display with clear, audible alerts for easy reading during tests. Includes built-in protections against reverse polarity and overvoltage for safer operation. Constructed with durable ABS materials and cooling fans to ensure reliable performance over time. Employs high-quality copper test wires that connect directly to battery terminals for accurate real-world results. This tool fits well for everyday car owners seeking a practical, hands-on method to monitor and maintain battery health without needing advanced expertise.

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