Electronics

The BMAX 3-Slot USB Charging Station provides a practical solution for charging multiple lithium batteries at once, using a simple USB connection. For users with devices that rely on rechargeable batteries, such as flashlights, cameras, or power tools, this charger offers a convenient way to keep spares ready, especially during travel or outdoor activities, by plugging into any standard USB port for on-the-go power. Accommodates various battery sizes like 10440, 14500, and 18650 through a sliding blade design for secure fit. Independent slot control ensures each battery charges separately, with LED lights indicating status for easy monitoring. Built from durable, heat-resistant engineering plastic for safe operation and efficient heat dissipation. Includes smart chip technology with protections against overcharge, overcurrent, and short circuits to enhance safety. Supports 5V USB input with average speed charging to prevent excessive power draw. With dimensions of about 12.5 x 7 x 2.5 cm and a weight of 94.6 g, it's a compact option for portable use. This charger fits well for hobbyists or professionals needing reliable battery management without complex setups.

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The Schumann Resonance Pulse Generator is a compact device that emits a stable frequency for daily audio enhancement, helping to create a consistent sound environment. In everyday use, this generator can assist with relaxation or focus during meditation, work sessions, or in noisy settings, by providing a subtle pulse that mimics natural earth frequencies without interfering with other audio sources. Battery-powered design with no voltage ripple for more accurate frequency output Polymer lithium battery offering up to 200 hours of use and 850mAh capacity with overcharge, overdischarge, and overcurrent protection Small, portable size of approximately 6.8x5.2x1.2cm for easy carrying and discreet placement Charges via a 5V Micro USB interface with a 250mA charging current, taking about 6 hours for a full charge Low working current of 7mA, making it energy-efficient for prolonged sessions This device fits well for those needing a simple, reliable tool to maintain audio stability in daily routines, such as at home or while traveling.

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This 18650 lithium-ion battery charger is a practical device for recharging 18650 Li-ion batteries, complete with a US power plug for straightforward compatibility. In everyday scenarios, it's useful for hobbyists or users of devices like flashlights, vaporizers, or portable electronics, helping maintain battery life without the hassle of incompatible chargers or frequent replacements. Smart charging function to help prevent overcharging Wide input voltage range of AC100V-240V, 50-60Hz for global adaptability Output at 4.2V/650mA to suit standard 18650 batteries Includes a US power plug for easy connection to standard outlets Compact design for convenient storage and portability Compatible with most 18650 Li-ion batteries used in various applications Light specifications include DC 4.2V input, making it a straightforward choice for users needing reliable battery maintenance. This charger fits well for those with US electrical systems seeking an efficient way to power their devices.

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This soil moisture hygrometer sensor measures soil humidity to support effective plant monitoring in gardens and indoor setups. For gardeners and plant enthusiasts, it's useful for checking soil moisture levels to avoid overwatering or drought stress, helping maintain healthier plants in various environments like pots, raised beds, or automated systems. Features the LM393 chip for reliable and stable operation Offers dual output modes: simple digital for ease and more precise analog for detailed readings Includes adjustable sensitivity to fine-tune measurements for different soil types Has fixed bolt holes for straightforward installation in DIY projects Operates on a working voltage of 3.3V-5V, making it compatible with common microcontrollers Compact size of 3cm x 1.6cm for space-efficient use This sensor fits well in beginner to intermediate gardening applications, providing practical data for better plant care decisions. Made from semiconductor materials, it ensures consistent performance in everyday use.

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The UltraFire 18650 3000mAh rechargeable lithium battery offers a dependable power source for various devices. As a standard 18650 Li-ion battery, it provides consistent performance without the memory effect, meaning you can recharge it fully every time. In everyday use, this battery powers emergency lights during outages, keeps portable devices like flashlights running on trips, or supports power tools for DIY projects, ensuring you have reliable energy when needed. Delivers 3000mAh capacity at 3.7V for extended runtime in compatible devices Supports up to 1000 recharge cycles, reducing the need for frequent replacements Made from environmentally friendly Li-ion material, promoting sustainable usage Compact size of 7cm length and 2cm diameter for easy fit in most battery compartments No memory effect, allowing full recharges without capacity loss over time Compatible with emergency lighting, portable electronics, and power tools This battery fits well for users seeking a practical, long-lasting option for everyday and backup power needs, such as outdoor enthusiasts or homeowners preparing for power interruptions.

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The SUNLEPHANT Human Infrared Sensor is a compact motion detection device that uses passive infrared technology to identify human movement in its vicinity. In practical settings, this sensor can be used in home security systems to activate lights or alarms upon detecting motion, or in automated setups like energy-saving devices that turn off when no one is around, helping to reduce unnecessary power use. Adjustable delay time from 0.5 to 200 seconds, allowing customization for specific timing needs in various applications. Low static current under 65uA, which supports longer battery life in portable or wireless installations. Wide operating voltage range of 5-20V DC, making it compatible with a variety of power sources. Sensing range up to 7 meters with a less than 120-degree cone angle, suitable for targeted area monitoring. Compact dimensions of 32mm x 24mm and an induction lens diameter of 23mm, easing integration into tight spaces. Operates in temperatures from -15 to +70 degrees Celsius, accommodating indoor and outdoor use. This sensor fits well in DIY electronics projects, security enhancements, or automation tasks where reliable motion detection is needed without complex setups.

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This 9V battery offers reliable power for a variety of electronic devices, designed for everyday use in cameras, toys, and more. In scenarios like powering smoke detectors, remote controls, or photography equipment, this battery provides steady performance, helping to minimize interruptions from frequent replacements. High energy density ensures longer operational life compared to standard batteries Nominal voltage of 9V for compatibility with a wide range of devices Compact size of 48.6 x 26.0 x 17.0mm, making it easy to fit into tight spaces Versatile for use in cameras, toys, and other electronics that require consistent power Standard design that aligns with common 9V battery requirements It's suitable for hobbyists, households, or anyone needing a dependable power source for low-drain devices, offering practical value without unnecessary extras.

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This breadboard power supply module provides essential power options for DIY electronics enthusiasts building prototypes. In use, it's helpful for projects requiring stable 3.3V or 5V sources, such as testing sensors or microcontrollers on a breadboard, allowing quick voltage adjustments to avoid circuit damage or instability. Features two sets of 3.3V and 5V DC output pins for versatile connections Independent control for upper and lower channels, switchable to 0V, 3.3V, or 5V Supports output current up to 700mA, suitable for many low-power components Accepts input from 6.5-12V DC or USB, offering flexible power sources Compact design with dimensions of 32.2 x 52.8 x 20.7mm for easy integration It fits well in scenarios for hobbyists or students needing reliable power without complex setups.

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This USB charger accommodates 1.2V and 3.7V rechargeable batteries, offering a straightforward solution for everyday charging needs. For users managing multiple devices, such as remote controls, toys, or portable electronics, this charger connects via USB to a computer, power bank, or wall adapter, allowing you to recharge batteries independently without needing separate units. Supports dual independent charging lines, each at 400mAh, for efficient simultaneous battery recharging. Includes an indicator light to display charging status, helping you monitor progress easily. Features wide USB compatibility, working with standard ports for versatile use. Designed specifically for 1.2V and 3.7V batteries, reducing the need for multiple chargers. Compact and portable, making it suitable for home, travel, or on-the-go scenarios. Light specifications include a 400mAh charging rate per line. This charger fits well for hobbyists, photographers, or anyone handling various rechargeable batteries in daily routines.

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This high voltage boost generator is designed for DIY electronics enthusiasts working on projects that require voltage conversion. It steps up input voltages to generate a higher output, suitable for various experimental setups. For hobbyists and makers, this device can be used in educational experiments or prototype testing, such as creating static electricity demonstrations or powering small-scale devices. Always handle with care due to the high output voltage, ensuring proper safety measures like insulated tools and protective gear. Converts DC input from 3V to 7.2V with a current range of 2A to 5A Produces an output of approximately 200,000 volts, with a discharge distance of 10mm to 20mm Compact dimensions of 24mm diameter by 64mm length for easy integration into projects Includes 100mm output high voltage lines and input power cords, with red wire indicating positive polarity Operates as a pulse current type high voltage generator Ideal for 3C digital applications, including electronics prototyping This generator fits well in hands-on electronics projects where reliable voltage boosting is needed, particularly for users familiar with basic electrical safety protocols.

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The Vehicle Safety Voice Alert System offers audio reminders for vehicle doors and engine starts, helping users stay aware of potential oversights. In everyday driving scenarios, this system can notify you if a door remains open or prompt checks before starting the engine, enhancing routine safety checks without added complexity. Adjustable volume up to 90dB using a simple screwdriver for personalized alert levels Compact dimensions of 71x62x27mm with 300mm cable, making it easy to mount in tight spaces Supports DC6-30V power supply and connects to up to four switches for versatile setup MP3 file format allows for customizable voice messages, with straightforward audio changes by accessing the internal chip Operates in a wide temperature range of -20 to 70 degrees Celsius for reliable performance in various conditions Output power of 2W at 8 ohms ensures clear audio playback This system fits vehicles where basic audio alerts can address common safety concerns, such as forgetting to secure doors, providing a practical addition for drivers seeking straightforward reminders.

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The DSO138 oscilloscope is a fully assembled kit designed for signal analysis, featuring an ARM Cortex-M3 processor and a 2.4-inch color TFT display for clear waveform visualization. This oscilloscope suits electronics enthusiasts and students for tasks like testing circuits, capturing transient signals, or prototyping projects. For instance, it helps in debugging by displaying frequency, period, and other parameters in real time, making it easier to identify issues in DIY electronics or educational experiments. Equipped with automatic, regular, and one-shot modes for flexible waveform capture. Offers rising or falling edge triggers and negative delay for precise signal observation. Includes waveform storage to retain data even after power-off. Features a built-in 1Hz/3.3V square wave test signal for calibration. Displays key parameters like frequency, pulse width, and peak values digitally. Supports secondary development, such as converting to a millivoltmeter. Key specs include a 1Msps sampling rate, 0-200KHz analog bandwidth, and compatibility with DC 9V power. This kit fits those seeking a compact, user-friendly tool for basic to intermediate signal analysis needs.

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The LQSC Bluetooth Car Audio Receiver Module offers a straightforward way to add wireless audio to DIY vehicle setups. In everyday use, this module helps upgrade older cars or custom projects by enabling Bluetooth streaming from devices like smartphones, making it easier to play music or podcasts without tangled wires. Bluetooth 5.1 technology for stable connections and efficient audio decoding. Wide input voltage range of 5V to 35V, accommodating various power sources. Dual output options: 3.5mm stereo jack and XH 2.54-3P socket for flexible connectivity. Compact dimensions of 5.5 x 3.2 x 1.2 cm, ideal for tight spaces in vehicles. Reverse power connection protection to prevent damage during installation. External antenna compatibility for better signal in enclosed areas. This module fits well in DIY audio projects for hobbyists seeking reliable, space-efficient solutions for vehicle entertainment.

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This microwave motion sensor switch operates on 220V-240V AC, designed for automating indoor lighting systems. It uses radar technology to detect movement and control lights efficiently. In a home or office setting, this sensor can turn lights on when it detects motion within its range, helping to save energy by automatically switching off after a set period. It's particularly useful in areas like hallways or storage rooms where hands-free operation enhances convenience and reduces electricity use. Adjustable detection distance from 2 to 10 meters for customized coverage 360-degree detection angle, minimizing blind spots compared to traditional infrared sensors Time delay settings from 10 seconds to 30 minutes for flexible automation Ability to penetrate objects, allowing for concealed installation without losing sensitivity Not affected by temperature changes or dust, ensuring reliable performance in various environments Compact size of 95x95x42mm, suitable for ceiling mounting indoors Supports up to 1200W power load, compatible with standard lighting fixtures This sensor fits well in residential or commercial spaces needing efficient, low-maintenance motion-based lighting control.

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This breadboard kit features an 830-hole solderless breadboard, a dedicated power module, and a set of jumper wires, designed for straightforward electronic prototyping. Use this kit to quickly assemble and test circuits for Arduino, Raspberry Pi, or other single-board projects. It's particularly helpful for students and hobbyists experimenting with components, as it allows easy connections without the need for soldering, saving time on revisions and iterations. Power module supports 5V and 3.3V outputs, with input options of 6.5-12V DC or USB for versatile power sources. Independently controlled outputs that can switch to 0V, 3.3V, or 5V, plus onboard pins for external connections. Constructed from ABS plastic with printed instructions and color-coded strips for clear layout guidance. Includes self-adhesive backing for stable mounting on any flat surface. Comes with 65 multi-color jumper wires for organized and reusable connections. 830 contact points ensure reliable, uninterrupted circuit links suitable for a range of DIY applications. This setup fits well for educational settings, personal tinkering, or professional prototyping, offering practical tools to build and modify circuits efficiently.

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This 4-slot battery charger accommodates AA, AAA, C, D, and 9V batteries, offering flexible charging options with an EU plug for easy use in compatible regions. In everyday scenarios, it's helpful for households or travelers who rely on multiple battery types, such as powering remote controls, toys, or portable devices without needing separate chargers. Independent slots allow charging up to four batteries of different sizes simultaneously for efficient use. LED indicators clearly show the charging status of each slot, helping you know when batteries are ready. Wide AC input voltage from 100-240V supports global power sources, reducing the need for adapters. Built-in protections guard against overcharging, enhancing safety during use. A flip cover helps protect the charging ports from dust and damage when not in use. Includes a 1m power cord for added convenience in various setups. With dimensions of approximately 19.5 x 9.3 x 5.3 cm, this charger fits well in small spaces and suits users seeking a versatile, straightforward solution for mixed battery needs.

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The Waveshare 16MP lens enhances Raspberry Pi imaging projects by providing a high-resolution option for M12 camera modules. It features a compact design suitable for various DIY electronics and photography setups. This lens works well for applications like surveillance systems, robotics vision, or outdoor monitoring with Raspberry Pi boards. It delivers clear images in a wide field of view, helping users capture detailed scenes without excessive distortion. 16-megapixel resolution for sharp, detailed photography 3.56mm focal length and F/2.5 aperture for low-light performance Wide field of view: 105° diagonal, 88° horizontal, 70° vertical on a 1/2.3-inch image format Operates in a broad temperature range from -30 to 70 degrees Celsius Lightweight at 7g with M12 x P0.5 mounting for easy integration Distortion less than -17.6% to maintain image accuracy This lens fits Raspberry Pi camera modules, though an additional cable may be required for compatibility with Raspberry Pi Zero or Zero 2W models.

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This 100-piece adjustable resistor kit provides a variety of variable resistors for electronic projects, featuring resistances from 100 ohms to 1 megaohm. Use this kit in DIY electronics to fine-tune circuits in applications like home appliances or security systems, such as adjusting settings in televisions or rice cookers for precise voltage control and reliable performance. Copper brushes and bakelite resistors ensure durability with a 200-degree rotation angle Resistances include 10 pieces each of 500R, 1K, 2K, 5K, 10K, 20K, 50K, 100K, 200K, and 1M ohms for versatile project needs Withstands up to 1 kg of pressure and operates at up to 50V with a 0.1W rating Offers rotational torque of 60-150 g/cm and stop strength of 500 g/cm for smooth adjustments Minimal resistance change after repeated use, with less than 5% variation under load Suitable for educational experiments, prototyping, or repairs in various electronic devices This kit fits well for hobbyists, students, and technicians seeking dependable components for circuit design and modification.

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The Magenta-2 is a 2-way crossover specifically designed for bookshelf speaker audio systems, dividing audio signals into high and low frequencies for balanced sound output. In a typical home audio setup, this crossover helps enhance speaker performance by ensuring each driver handles the appropriate frequency range, making it useful for DIY enthusiasts building or modifying their speaker systems. 2-way filtering for high and low frequencies at 2830Hz crossover point Supports up to 200W power handling with 4-8 ohm impedance compatibility Optimized capacitors that maintain circuit stability and improve overall sound quality High-temperature inductors deliver deeper bass effects without distortion Solder-free terminals allow for straightforward, tool-free installation Compact dimensions of 100 x 62 x 34mm and lightweight at about 139g for easy integration This product fits well in setups for audio hobbyists looking to refine bookshelf speaker performance with reliable frequency management.

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The Adjustable Frequency Pulse Generator Module is a compact electronic tool for DIY enthusiasts, featuring an NE555 chip for reliable pulse generation. In practical use, this module helps create adjustable square wave signals, making it ideal for testing circuits, building timers, or experimenting with frequency modulation in personal electronics projects. Adjustable resistance allows for precise frequency control, enabling customization for specific applications. Supports a working voltage range of 5 to 12V, offering flexibility with common power sources. Compact board size of 29mm x 12mm fits easily into tight spaces or prototypes. Utilizes the NE555 chip, known for its stability in timing and oscillation tasks. Simple setup with no complex programming required, suitable for beginners and advanced users alike. Light specifications include its small form factor and broad voltage compatibility, which enhance portability in field or lab settings. This module fits well for those designing custom electronics, from hobbyists to educators seeking hands-on learning tools.

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This 4-slot battery charger supports AA, AAA, C, D, and 9V batteries, offering independent charging slots for versatile use. In a busy home or workshop, it's useful for keeping devices like remotes, toys, and tools powered by charging different battery types simultaneously, without needing multiple chargers. Four independent slots allow charging of AA, AAA, C, D batteries at the same time, or two 9V batteries AC 100-240V input for global compatibility, with a 1-meter power cord for flexible placement LED indicators display charging status for each slot, helping monitor progress easily Built-in multiple protections to prevent overcharging and ensure safe operation Flip cover design protects the slots when not in use, reducing dust and damage Compact size of 19.5 x 9.3 x 5.3 cm for easy storage and portability This charger fits well for everyday users managing various rechargeable batteries, providing a practical solution for mixed battery needs without added complexity.

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This customizable USB switch, model IRSW20B, serves as a versatile input device that emulates a standard HID USB keyboard or mouse. It uses a through-beam photoelectric trigger for reliable, non-contact activation, allowing users to define functions via simple software settings. In practical settings, such as office environments, industrial controls, or gaming setups, this switch can automate tasks like key presses or mouse actions, making it useful for scenarios where mechanical buttons are impractical, such as in factory inspections or accessibility aids for disabled individuals. Customizable to any keyboard key, combination, or mouse function via Windows-based software, with no software needed afterward. Supports string output up to 38 characters, multimedia controls like volume adjustment, and gamepad directions. Compatible with DOS, Windows versions from 2000 to 10, Linux, Mac, and Android systems. Photoelectric trigger ensures durability by avoiding physical wear. Includes a 2-meter USB cable for flexible placement. With its lightweight 65g design and 5V power requirement, this switch fits well for users needing efficient, programmable input solutions in professional, recreational, or assistive applications.

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This DC power converter offers a USB output for reliable charging of compatible devices from a DC power source. In scenarios like automotive use or portable power setups, it provides a straightforward way to charge smartphones, tablets, or other USB-powered gadgets using available DC voltage, ensuring your devices stay powered during travel or outdoor activities. Utilizes synchronous rectification for efficient power conversion, supporting wide input voltages from 9V to 36V. Includes DC plugs and wiring terminals for easy connection to various power sources. Features a USB port with a fast charging recognition chip, compatible with Android and iOS devices for optimal charging speeds. Delivers output of 5.2V at up to 5A (25W), with adjustments based on input voltage for safe operation. Compact size of 63x27mm makes it portable and easy to integrate into tight spaces. This converter fits well for users requiring dependable DC-to-USB conversion in everyday or mobile environments, such as in cars, boats, or backup power systems.

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This USB battery charger is designed for 18650 Li-Ion batteries, offering a practical solution for recharging and powering devices on the go. For users who frequently handle rechargeable batteries, such as in flashlights, vape devices, or DIY projects, this charger provides reliable performance by allowing you to charge batteries while also using it as a power source for your phone or other gadgets. Independent charging slots with separate circuits for safe, simultaneous battery charging. Smart LCD display shows real-time voltage and current for both input and output, helping monitor charging status accurately. Reverse polarity protection to prevent damage from incorrect battery insertion. Automatic prioritization of device charging when both input and output are in use. Auto-off function after 20 seconds of inactivity, promoting energy efficiency. Dual USB outputs with current limits up to 2.2A total, supporting simultaneous device charging. With dimensions of approximately 100mm x 50mm x 30mm, it's compact and fits easily in a bag, making it ideal for everyday carry by tech enthusiasts or outdoor adventurers seeking versatile battery management.

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