The CNBJ fuel injector tester is a straightforward diagnostic tool for checking fuel injectors during routine vehicle maintenance. It allows users to test injectors individually to detect issues like sticking or leaking. In everyday scenarios, such as preparing for a road trip or performing a basic tune-up, this tool connects easily to your car's 12V battery. Simply select a pulse mode and observe the injector's response, helping you identify problems without starting the engine, all while ensuring safety in a well-ventilated area. Four pulse modes for flexible testing: single pulse, short pulse, long pulse, and continuous pulse. Powered by a standard 12V car battery for convenient, on-the-spot use. Mode locking feature to maintain consistency across tests. Visual signal indicator to confirm pulse output during operation. Works alongside any fuel pressure tester for comprehensive diagnostics. This tool fits well for car owners and mechanics seeking a reliable option for at-home or garage maintenance to keep vehicles running smoothly.

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The CNBJ-501 is a handy tool for testing remote control frequencies right at home, helping you verify and adjust signals without needing professional equipment. In everyday scenarios, like troubleshooting a faulty garage door opener or ensuring your TV remote works properly, this device lets you quickly check frequencies and infrared functionality, saving time and reducing frustration from unreliable remotes. Power key for accurate frequency testing up to 1GHz, with clear display for easy reading. Built-in LED lighting to illuminate the testing area in dim conditions. Infrared input indicator to confirm if the remote's emitter is functioning. Compact size of about 150x75x30mm for portable, on-the-go use. Simple operation with minimal setup, ideal for avoiding interference from nearby signals. This tool fits well for homeowners, DIY enthusiasts, or anyone maintaining electronics, offering a straightforward way to diagnose remote issues in daily life.

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The CNBJ-707 is a straightforward relay tester designed for basic automotive diagnostics, helping you quickly assess common 4-pin and 5-pin relays in your vehicle. For everyday car maintenance, use this tester to check relay function before a long drive or routine repairs. Simply connect it to your car's battery and follow the steps to verify pin configuration, contact operation, and consistency, saving time and avoiding potential issues like electrical failures. Detects proper pin setup for standard automotive relays Monitors contact closure and opening times over multiple cycles Uses LED indicators to show pass or fail results clearly Operates with a standard 12V battery in the 11V-15V range Checks for consistent performance to identify potential wear This tool fits well for DIY enthusiasts and mechanics performing routine vehicle checks, offering a practical way to maintain reliable electrical systems without advanced equipment.

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The CNBJ-722 is a straightforward tool designed for testing automotive relays during routine vehicle maintenance. It helps identify if a relay is functioning properly, making it easier to diagnose electrical issues in cars and trucks. In everyday scenarios, such as checking relays in your garage or during a roadside repair, this device simplifies the process. Just select the voltage and pin type, then press test to get quick results, saving time compared to manual methods that require multiple tools. LED display for clear visibility, even in low-light conditions One-button operation to cycle through 12V or 24V and 4 or 5 pin options Automatic testing sequence with a buzzer to signal completion Compact size of 97x27x200mm for easy storage and portability Requires two 18650 batteries (not included) for reliable power This tool fits well for DIY enthusiasts and mechanics who perform regular vehicle checks, offering a practical way to ensure electrical components work as expected without unnecessary complexity.

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This flexible coupling is designed for connecting 6.35mm shafts in CNC and stepper motor setups, helping to transmit rotational motion efficiently. In practical applications, such as CNC machines or 3D printers, it accommodates minor shaft misalignments, reducing wear and ensuring smoother operation without transmitting harmful vibrations. Precisely sized for 6.35mm x 6.35mm shafts, fitting common motor configurations Constructed from lightweight aluminum for reliable performance in dynamic environments Compact length of 25mm and diameter of 20mm, allowing easy integration into tight spaces Offers flexibility to handle angular and parallel misalignments up to standard tolerances Simple clamp-style design for quick installation and removal Corrosion-resistant material suitable for various workshop conditions This coupling fits well in projects requiring precise torque transmission, making it a practical choice for hobbyists and professionals assembling or maintaining automated systems.

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This CO2 air quality monitor tracks carbon dioxide levels, temperature, and humidity to help maintain a healthy environment in various settings. In practical use, such as in greenhouses or warehouses, it provides real-time data to identify poor air quality, allowing users to take timely actions like improving ventilation for better plant growth or worker safety. LED digital display with backlight for clear visibility in low-light conditions Intelligent alarm system that alerts when CO2 levels exceed set thresholds Built-in 1200 mAh lithium battery with Type-C charging for portable operation Real-time refresh every second for accurate and stable measurements using semiconductor sensors Greenhouse compensation calibration to ensure precise readings in controlled environments Compact size of 9x7x3.5cm and lightweight at 0.105kg for easy placement This monitor fits well for applications in agriculture, storage, or indoor spaces where monitoring air quality is essential for efficiency and health.

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This gas leak detector is designed to monitor for natural gas, propane, coal gas, methane, and other combustible gases in residential settings. It features a straightforward setup and reliable detection to help identify potential hazards early. In a typical home, such as in the kitchen or near gas appliances, this device can provide peace of mind by displaying gas concentrations and alerting users to leaks, allowing for quick response to maintain safety. Clear LCD screen shows numerical gas concentration for easy monitoring. Loud audible alarm (over 85dB) and visual flash when gas levels exceed 2500 PPM. Detects multiple gases including liquefied petroleum gas and methane. Made from durable plastic, with a compact size of approximately 112x73x43mm for wall mounting. Operates on AC 90V-240V, compatible with standard EU plugs. Simple installation using included screws and panel. This detector fits well in homes, bathrooms, or utility areas, offering practical monitoring for families concerned about gas safety. Its white design blends discreetly into most environments.

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This coating thickness gauge is designed for accurately measuring the thickness of paint, enamel, chrome, and other coatings on metals like steel, aluminum, and copper in industrial settings. In manufacturing or metal processing, it helps inspectors quickly verify coating quality to ensure compliance with standards, such as checking for proper thickness to prevent corrosion or wear. Self-calibrating for reliable measurements right out of the box Non-slip groove design for comfortable, secure handling during extended use High-definition display for clear, easy reading in various lighting conditions High-sensitivity probe that delivers precise results with 1µm resolution Compact size of about 8.5 x 4 x 3 cm for easy portability Operates on 2 x 1.5V AAA batteries (not included) and works in temperatures from -10 to 50°C Constructed from durable ABS material for everyday use This gauge suits professionals in quality control, manufacturing, and inspection who need accurate, non-destructive testing for coatings up to 2000µm.

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This coating thickness gauge is designed for measuring paint and coatings in industrial and automotive settings, offering reliable performance for everyday use. In scenarios like automotive repair or quality control in manufacturing, it provides a straightforward way to check coating thickness, helping to ensure material integrity and prevent issues from improper application. Features zero point and multi-point calibration for precise adjustments to different surfaces. Includes a high sensitivity probe that detects variations as fine as 0.05mm. Equipped with a high definition electronic digital display for clear, easy-to-read results. Incorporates an anti-slip groove design for secure handling during measurements. Supports a measurement range of 0.05-2.00mm, suitable for a variety of coating thicknesses. Powered by two 1.5V AAA batteries (not included) with a 3V supply, promoting portability. With compact dimensions of 12.2 x 5 x 2.2cm, it's a practical tool for technicians and workers in fields requiring accurate coating verification.

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The Coating Thickness Gauge offers a reliable way to measure paint and coating thickness, helping users achieve accurate readings in various applications. This device is useful for automotive technicians inspecting vehicle paint layers for damage or corrosion, or for professionals in manufacturing ensuring uniform coatings on materials. Precision probe delivers measurements from 0.05 to 2.00mm for detailed accuracy Non-slip groove design provides a comfortable, secure grip during use High-definition display ensures clear visibility of results in different lighting Self-calibration feature allows for quick adjustments to maintain precision Compact size of about 12 x 4.3 x 2.2cm makes it easy to carry and store Powered by 2 AAA batteries (not included) with a 3V supply for straightforward operation This gauge fits well for those in quality control or maintenance roles seeking a practical tool for routine thickness checks without added complexity.

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This coaxial video signal splitter distributes one AHD, CVI, or TVI input to eight outputs, suitable for surveillance and video systems. In a typical setup, such as a security camera installation, it allows you to send a single high-definition video feed to multiple monitors or recording devices without signal loss, making it useful for monitoring larger areas like warehouses or offices. Distributes signals with no compression or delay for reliable video transmission Compatible with PAL, NTSC, and SECAM formats, supporting various HD video signals Features a 300MHz analog bandwidth and up to 300-400 meters output range without attenuation Includes built-in surge and electrostatic protection for added device safety Utilizes plug-and-play functionality with no software required for easy setup Powered by a stable DC 12V supply, housed in a durable iron and steel structure with gray and black finish Equipped with standard BNC input and output sockets for straightforward connections This splitter fits well in professional video distribution needs where maintaining signal integrity over distance is essential, ideal for users expanding their CCTV or AV systems.

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This coaxial AHD CVI TVI video signal splitter distributes up to 4 input signals to 8 outputs, maintaining original quality without compression or delay. In surveillance setups, it helps extend video feeds to multiple monitors or recorders over distances up to 300-400 meters, ensuring stable transmission for reliable monitoring in homes or businesses. Utilizes a professional SGM semiconductor IC for clear, high-bandwidth video amplification up to 300MHz. Supports PAL, NTSC, and SECAM standards, compatible with various HD video signals via BNC connectors. Offers plug-and-play functionality with no software needed, simplifying installation. Includes built-in surge and electrostatic protection for enhanced durability. Features an iron and steel structure with gray and black finish for sturdy, professional-grade build. Requires a stable DC 12V power supply for consistent performance. This splitter fits scenarios needing multiple video outputs from a single source, such as security systems, making it a practical choice for users seeking dependable signal distribution.

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This coaxial cable surge arrester safeguards video signal equipment from voltage surges, such as those from lightning or electrostatic discharge. For instance, it's helpful in protecting outdoor security cameras or broadcast systems in areas prone to electrical storms, ensuring uninterrupted signal transmission. Constructed with aluminum and electronic components for reliable performance Available in silver tone and orange for visibility and ease of use Features BNC input and output connectors with 75 ohm impedance for compatible setups Offers a response time of less than 0.5 nanoseconds to quickly mitigate surges Supports a bandwidth of 20 MHz with insertion loss under 0.5 dB to maintain signal quality Functions across a wide temperature range from -60°C to +190°C With a 28 cm wire length, this device fits well in various installations where protecting coaxial connections is essential for video systems.

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The coaxial lightning arrester serves as a protective device for satellite TV systems and CATV setups, helping to guard against electrical surges from lightning strikes. In a typical home setup, this arrester connects between your outdoor antenna and indoor equipment, diverting harmful voltages to prevent damage to TVs and receivers during thunderstorms, while preserving signal quality for reliable viewing. Features low insertion loss of up to 1.2 dB to minimize signal disruption. Includes double copper tube protection for enhanced shielding against interference. Built-in waterproof ring ensures effective sealing in outdoor environments. Compact size of 47 x 21 x 21mm makes it easy to install in tight spaces. Lightweight and portable design for straightforward mounting. Supports a frequency range of 5-2150MHz and 75Ohm impedance, suitable for standard CATV systems. Durable construction for long-term use in residential applications. This product fits well in home satellite TV installations, offering practical protection for users concerned about weather-related risks.

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The Coaxial Lightning Surge Protector helps protect radio antennas from electrical surges caused by lightning. In outdoor settings like ham radio installations or broadcast towers, it prevents damage to equipment by diverting surge energy safely to ground, maintaining signal integrity during storms. Utilizes the 1/4 wavelength short-circuit principle for effective surge protection. Compatible with UHF SL16, PL259, and SO239 interfaces for versatile antenna connections. Operates across a DC to 3GHz frequency range to suit various applications. Compact dimensions of 41mm x 78mm allow for straightforward mounting in tight spaces. Built with all copper nickel-plated material and a gold-plated conductor for reliable conductivity. Includes a PTFE insulator to withstand environmental conditions and ensure long-term performance. This protector fits well in setups requiring durable, impedance-matched (50 ohm) surge defense for coaxial systems.

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This coaxial video signal splitter is designed for AHD, CVI, and TVI systems, allowing you to distribute high-definition video signals without compression or delay. It supports multiple video formats and ensures reliable signal transmission over distances. In a typical setup, such as a security camera network, this splitter helps expand your system by taking two input signals and outputting four, making it useful for monitoring larger areas without signal loss. It's ideal for homes, offices, or commercial spaces needing stable video distribution up to 300-400 meters. Features a professional SGM semiconductor chip for clear, stable video output Compatible with PAL, NTSC, and SECAM standards for versatile use Analog bandwidth up to 300MHz, supporting high-definition signals Plug-and-play design with no software required for easy installation Built-in surge and electrostatic protection for added durability Uses standard BNC sockets and requires a DC 12V power supply Steel construction with gray and black finish for robust, professional appearance This splitter fits well in setups where reliable, long-distance video distribution is needed, offering a practical solution for expanding surveillance without complications.

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Compact COB battery camping lamp that provides steady, wide-area illumination for tents, campsites and backyard tasks. The lamp uses a 16‑core COB array to produce up to 400 lumens with stepless dimming for precise brightness control. Use cases include tent interior lighting, campsite meal prep, reading in low light, and short power‑out situations. Choose the large model for added on‑top storage and longer runtime; choose the small model for lighter packing and quicker setups. COB array: Double‑row 16‑core LED for uniform, wide beam. Two sizes: Large 101×211 mm, 325 g, 6W; Small 86×155 mm, 178 g, 3W. Power: Runs on 3×AA batteries (not included); 9–70 hours depending on brightness. Controls: Stepless dimming knob for precise light levels. Build: ABS body, chrome‑plated iron handle, matte frosted finish; waterproof design for outdoor use. Specifications: Brightness up to 400 lumens; COB lamp bead; battery powered. Fit: Designed to fit in backpacks and tents—select large for built‑in storage and longer runtime or small for minimal-weight packing.

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The COB Bicycle Light is a USB-rechargeable headlight and taillight housed in a compact aluminum body for everyday cycling visibility. With 1600 lumens and four modes, switch between High, Low, Slow Flash, and Flash to suit urban streets or dim trails. USB charging works from any port, and a 650 mAh battery provides about 2–4 hours of operation. An automatic power-off feature helps conserve energy between rides. 1600 lumens brightness with 4 modes: High, Low, Slow Flash, Flash USB rechargeable, 650 mAh battery; 2–3 hour charge; 2–4 hour runtime Durable aluminum alloy housing with sealed design for water resistance and heat management Lightweight at 82 g; compact size with broad illumination range Automatic power-off to protect battery and extend life Dual-function design suitable for front lighting and rear visibility in one unit Light specs: Color: White; Lamp beads: COB x3; Material: aluminum alloy + engineering plastic; Weight: 82 g; Charging time: 2–3 hours; Battery: 650 mAh; Lifespan: ~100,000 hours Fit: Compatible with standard bicycle handlebar mounts

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This COB headlamp delivers bright, energy-efficient illumination for nighttime tasks. It uses a COB LED to provide broad, even light and runs on three AAA batteries (not included). The three operating modes cover various scenarios without overusing power. Ideal for night riding, night fishing, camping, or family emergencies where hands-free lighting is essential. COB LED provides bright, broad illumination with low energy consumption, reducing battery usage. Three modes: strong, weak, and flashing to match distance, task, or signaling needs. Power source: 3 x AAA batteries (not included), a common size used in portable lights. Headband design enables hands-free operation for biking, camping, and on-the-job tasks. Suitable for night riding, fishing, camping, and family emergencies. Specifications: Light source – COB LED; Power supply – 3 x AAA batteries (not included). Fit: Headband-style design suitable for most head sizes.

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The COB Lamp Beads Mini Mountain Bike Light is a compact, waterproof bike light designed for reliable visibility on urban rides and trails. It features COB LEDs for bright exposure with a lightweight, portable form factor. Great for commuting, evening rides, or rainy-day outings, this light can be mounted on handlebars, bags, or clothing with the included strap base, offering hands-free operation. Waterproof design for use in rain and wet conditions Type-C USB charging for easy, sustainable power Dual output: 130 lm front light and 80 lm rear light 3 lighting modes: high, low, and flashing Lightweight at 24 g with compact 47 x 37 x 18 mm shell Quick, tool-free installation via a strap base with anti-slip bottom Battery and charging: built-in 150 mAh battery; runtime about 1–2 hours. Recharge via USB Type-C. Fit: flexible strap adapts to most handlebars and can also be worn on a bag or clothing for versatility.

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This COB LED DIY downlight chip is a 220–240V smart‑IC module for spotlights and recessed fixtures, available in 3W, 5W, 7W and 10W. The integrated IC allows direct mains connection without an external driver. Use it to retrofit existing spotlight or downlight housings for task, accent, or cabinet lighting where driver space is limited. Suitable for DIY projects and small commercial installs that need a compact, directly wired light source. Wattage options: 3W, 5W, 7W, 10W to match lumen needs. Voltage: 220–240V AC direct connection; no external driver required. Color temperature: Cool white 6000–6500K; Warm white 2800–3200K. Beam & color: 120° beam angle; CRI Ra80 for reasonable color rendering. Construction: Aluminum housing for heat dissipation; integrated smart IC protection. Light specs: rated life >10,000 hours; lumen output varies by wattage. Fit statement: verify mounting diameter and thermal path in your spotlight or downlight housing before installation.

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The COB LED Light Chip is a compact mains-powered module for DIY spotlights and small-area illumination. It connects directly to 220–240V AC and is available in 3W, 5W, 7W, 10W, and 12W variants and two color temperatures. Designed for hobbyists and small-scale installers, the module suits recessed cans, custom track heads, under-cabinet runs, and display lighting where direct-mains installation is preferred. It reduces component count by omitting an external driver. Wattage options: 3W–12W to match brightness and power limits. Color: Cool white 6000–6500K or warm white 2800–3200K. Electrical: 220–240V AC input with integrated smart IC for simplified wiring. Optical: 120° beam angle, Ra80 color rendering. Construction: Aluminum housing for passive heat dissipation. Light specifications: expected life >10,000 hours; no external driver required. Fit: made to install in standard DIY fixtures accepting 220–240V COB modules; ensure adequate ventilation and compatible mounting depth.

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Compact USB-rechargeable COB work light combining a T6 dome lamp with multiple COB LEDs for focused and area illumination. The lamp head pivots 0–180° and the unit includes a magnetic tail and integrated hook for hands-free positioning. Use this light for garage repairs, under-cabinet work, tent or campsite tasks, and temporary job-site lighting. Four modes (top light, main COB, low, red/blue flash) help conserve battery or signal in low-visibility situations. Adjustable beam: 0–180° swivel head for directed lighting. Hands-free mounting: magnetic tail plus built-in hook for metal surfaces and overhead hanging. Power & charging: 2200mAh battery, USB 5V charging, ~3-hour charge time. Indicator & protection: 4-level battery indicator and dustproof/waterproof cover (IPX6). Accessory compatibility: standard 1/4" screw mount fits tripods and racks. Light specifications: Material ABS and nylon; run time ~3–4 hours; W598A/B ≈ 11.5 x 5 x 3.9 cm; W599A/B ≈ 12.5 x 6 x 4.2 cm. Fit statement: Compatible with standard 1/4" mounts and magnet-friendly surfaces for workshop, home, or field use.

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These Coconut Shell Rags are kitchen cleaning cloths sized for everyday tasks. Made from fine-fiber material (about 20 g each), the dish cloths come in 30×25 cm and 30×30 cm options and work wet or dry for wiping, drying, and polishing. Use them for countertop cleanup, drying dishes, removing grease from pans, and polishing stainless surfaces. They rinse clean of oil residues and air-dry quickly, making them suitable for repeated daily use in home kitchens or small food-prep areas. Material: fine fiber, lightweight (~20 g) Sizes: 30×25 cm or 30×30 cm options Use modes: effective when used wet or dry Care: rinse with water to remove oil; air dry for reuse Versatility: wipe countertops, dry dishes, polish metal Compatibility: fits standard dishcloth holders and racks Light specifications: fine fiber; ~20 g per cloth; available 30×25 cm and 30×30 cm. Fit statement: Suitable for routine kitchen cleaning and designed to fit common cloth storage and drying systems.

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