Grove - NFC (SaT25DV64) Versatile NFC/RFID Tag Board With 3.3V/5V Power Supply, ST25DV64K Chip

HX203D Smart-ID Chip Card Reader This HX203D card reader can read RFID card serial numbers and output to your computer according to the specified format, then management software derives many more functions. This RFID card reader is a simple, fast-read card. Belong to standard HID devices do not need to install the driver and can be read in any number, this function is suitable for extended functionality in existing software, without any modification to the original software. Check out our entire range of IOT & Wireless Applications: Access control Security needs. Time attendance Inventory Management Asset Tracking

CHAM CMINR14500F2 1000mAh 2C 3.6V AA Rechargeable Li-ion Battery Introducing the CHAM CMINR14500F2 rechargeable Li-ion battery – a compact, single-cell AA-sized power source delivering 3.6 volts at 1000mAh. Designed for projects that require a reliable 3.76V high-capacity supply, this battery is perfect for powering portable devices such as flashlights, hobby transmitters, and receivers. This Li-ion battery also serves as an excellent replacement for standard non-rechargeable AA batteries, making it a cost-effective and efficient option for applications like RC transmitter/receiver remotes. The versatile lithium ion battery terminals are compatible with many adapters or holders, or they can be permanently soldered to your device’s wiring for seamless integration. Important Guidelines: Avoid Deep Discharge: Do not let the Li-ion battery drop below 2.5V under load. Initial Charge: Fully charge to 4.2V before the first use. Metal and Magnets: Keep any metal moving parts or magnets away from both the positive (top) and negative (bottom) contacts. Proper Installation: Never force the battery into its compartment. Battery Pairing: Do not mix old and new battery cells. Charger Quality: Always use a reliable, high-quality battery charger. Heat Exposure: Keep the battery away from high temperatures. Prevent Short-Circuiting: Avoid connecting the positive (top) and negative (bottom) terminals directly. Safe Storage: When not in use, store the battery in its plastic holder or another insulating container. Charging Voltage: Do not exceed 4.22V during charging—this is another reason to choose a quality charger. Supervised Charging: Never leave the battery charging unattended. Long-Term Storage: Do not store the battery fully charged for extended periods. Optimal Storage Conditions: Store in a cool, dry place at about 3.7V (the recommended storage charge). Post-Discharge Care: Recharge the battery as soon as possible after it has been discharged. User Knowledge: Ensure you are well-informed about proper Li-ion battery discharging, charging, assembly, handling, and storage before use. Features Form Factor: Cylindrical Battery Type: Lithium-Ion Performance: High efficiency with substantial capacity Design Feature: Flat top for compatibility with a wide range of devices

1200mAh AAA Rechargeable Battery 1.2V (Pack of 2) The OSLETECH AAA Rechargeable Batteries combine efficiency, effectiveness, and environmental friendliness in the ideal balance. This pair of globally recognized and broadly compatible Ni-Mh batteries are fully charged and ready to use right out of the package. Boasting an industry-leading 1200mAh capacity, these batteries offer over 500 charge cycles and feature a no-memory effect, allowing them to be charged and discharged as needed without losing capacity. These batteries also support quick charging via any smart or quick charger. These OSLETECH 1200mAh Rechargeable AAA Batteries are also designed for Rechargeable and reusable with the environment in mind. These batteries are made in India products and the smart choice for sustainable energy. Key Features: Cost-effective with many recharge cycles. NiMH chemistry for balanced performance. Fits various devices. Available in different mAh ratings. Rated at 1.2 volts for broad compatibility. Charging time varies by charger. Applications: Remote controls Digital cameras Wireless computer accessories Compact flashlights Portable audio devices Toys Clocks Calculators Handheld gaming devices Medical devices

AA Zinc Panasonic Special Battery The Panasonic AA Zinc Special Battery is an affordable and dependable power source designed for everyday low-drain devices. Made with Panasonic’s trusted build quality, this zinc-carbon AA cell delivers consistent output for home and office essentials like wall clocks, TV remotes, torches, toys, and basic electronic gadgets. Perfect for users who need a cost-effective battery for regular use, it provides stable performance, a good shelf life, and easy installation. This makes it a practical choice for households, students, small businesses, and hobby enthusiasts who want reliable power without the high cost of premium batteries. Features: Zinc-carbon chemistry for economical, everyday use Designed for low-drain household and office devices Stable power output for clocks, remotes, toys, and torches Lightweight and easy to install in AA-compatible gadgets Reliable build quality from Panasonic for consistent performance Long shelf life for storage and backup power needs

SmartElex Serial Bus Servo Driver Board, Integrates Servo Power Supply and Control Circuit The SmartElex Serial Bus Servo Driver Board is an advanced Servo Driver Board designed to simplify high-density servo control in robotics applications. It integrates a reliable Servo Power Supply and intelligent Control Circuit, allowing seamless communication with your MCU or host system through a single UART interface With sufficient external power, the board can manage up to 253 ST/SC-series serial bus servos, each capable of delivering detailed feedback such as position angle, load, operating voltage, temperature, and working mode. This centralized control approach minimizes wiring, saves space, and ensures precise, synchronized motion, making it an excellent choice for complex robotic systems and professional-grade automation projects. Features: Supports a serial UART interface to the MCU/host for servo control. Drives up to 253 ST/SC series serial bus servos concurrently. Onboard DC power supply (9V to 12.6V) for the servo rail. Servo feedback includes angle, load, voltage, mode, temperature, and error. Integrated control circuit for reliable operation and signal integrity. Jumper or switch to choose between UART and USB connection modes. Compact PCB footprint (approx. 42 x 33 mm) for confined places. Dual power inputs: DC barrel jack and screw terminal choices.

SmartElex 5V/3.3V Power Supply Stick with ON/OFF Switch The SmartElex 5V/3.3V Power Supply Stick with ON/OFF Switch is a compact and efficient regulated power supply module designed to provide reliable power for breadboard-based electronics and prototyping projects. It operates on a 6–12V DC input and delivers a stable, selectable 5V or 3.3V output, making it ideal for powering microcontrollers, sensors, and logic modules. This power supply module features an onboard ON/OFF switch for easy control, a voltage selection switch for flexibility, and a power LED for real-time status indication. To ensure safe operation, it is equipped with a PTC fuse that protects against overcurrent, helping safeguard both the connected components and the module itself. Features: 6-12V input through barrel jack or 2-pin header. The output voltage can be controlled to either 3.3V or 5V. 800mA of operational current. An ON/OFF switch allows for convenient control. Voltage selection switch for 3.3V/5V output. The power status LED provides visual indication. PTC fuse protection against overloads. Breadboard-friendly headers have a 0.1" pitch for simple insertion.

CR2032 3V Lithium Coin Battery The CR2032 3V Lithium Coin Battery is widely utilized due to its dependable and long-lasting power supply for a variety of small electronic devices. This cr2032 battery includes calculators, wristwatches, remote controls, various medical devices, fitness gadgets, machines, toys, and others. Featuring a flat top and a 225mAh capacity, the cr2032 battery is a 3V lithium coin battery that's specifically designed for use in miniaturized products. Its plus terminal utilizes manganese dioxide, which is chemically stable, resulting in 90% capacity retention even after a decade of proper storage. Additionally, the battery organic electrolytes are resistant to leakage when exposed to environmental changes. Features High and Stable voltage (3V) A full lineup for use in a wide variety of applications No mercury added Useful in a wide range of temperatures (-30°C to +60°C) The very high weight-to-power ratio Manganese dioxide material High capacity Long Lasting life. Low self-degradation rate and superior storability 0.2mA continuous standard drain High leak protection and hence no oxidation damage in devices, so it can be used in any expensive Gadget with superior safety. Resistance to continuous discharge and hence Very low self-discharge;

5V WiFi Smart Relay Module for IoT & DIY Projects The 5V WiFi Relay Module is a smart control board that lets you switch electrical devices on and off using a WiFi connection. It works with standard 5V power and can be connected to home networks, allowing remote control of lights, fans, appliances, and other devices through your smartphone or automation system. This module is designed for easy integration with DIY electronics and smart home projects. It provides reliable switching performance and can be used in both residential and hobby automation setups. Whether you’re building a custom smart switch or adding wireless control to your gadgets, the 5V WiFi Relay Module offers a simple and flexible way to make your devices connected and controllable over WiFi. Features: Operates on 5V power supply for easy integration Enables wireless ON/OFF control of electrical devices over WiFi Suitable for smart home and IoT automation projects Supports remote switching via mobile app or automation system Reliable relay-based output for controlling loads safely Compact module design for DIY electronics and embedded systems Ideal for controlling lights, fans, pumps, and appliances

3V CR2025 Lithium Coin Battery The CR2032 3V Lithium Coin Battery is widely utilized due to its dependable and long-lasting power supply for a variety of small electronic devices. This cr2032 battery includes calculators, wristwatches, remote controls, various medical devices, fitness gadgets, machines, toys, and others. Featuring a flat top and a 225mAh capacity, the cr2032 battery is a 3V lithium coin battery that's specifically designed for use in miniaturized products. Its plus terminal utilizes manganese dioxide, which is chemically stable, resulting in 90% capacity retention even after a decade of proper storage. Additionally, The battery organic electrolytes are resistant to leakage when exposed to environmental changes. Features High and Stable voltage (3V) A full lineup for use in a wide variety of applications No mercury added Useful in a wide range of temperatures (-30°C to +60°C) The very high weight-to-power ratio Manganese dioxide material High capacity Long Lasting life. Low self-degradation rate and superior storability 0.2mA continuous standard drain High leak protection and hence no oxidation damage in devices, so it can be used in any expensive Gadget with superior safety. Resistance to continuous discharge and hence Very low self-discharge; Note: These batteries are Non-Rechargeable. ?Also check 24mm Coin type battery holder available on the Iotcart website. The holder is versatile, accommodating various sizes and shapes of coin cells, with a secure design to withstand shock and vibration. It operates at a voltage rating of 3.3V and finds applications in portable devices, computers, consumer electronics, power management, commercial, and security.

3.7v 2000mah 18650 Li-Ion Battery 18650 lithium-ion battery is a Li-ion rechargeable battery with a 2000 mAh Battery Capacity. This is not a standard AA or AAA battery but is very useful for applications that require continuous high current or high current in short bursts like in cameras, DVD players, iPod, etc. These 3.7v 18650 li-ion battery 2000mah are safe to use, environment friendly and have long battery life. This li ion battery comes with high energy density and provides excellent continuous power sources to your device. It should be used with a protection circuit board that guards the 18650 battery against over-charge, over-discharge of the pack, and avoid over-current drawn. It is very easy to use the cell in any circuit just solder the wires on the terminals or use 18650 li-ion battery holders to easily replace the used cells. Care must be taken while handling Li-ion batteries as they are volatile and inflammable and should not be handled roughly and punctured. Also, don’t overcharge and discharge beyond a certain point as gases accumulated inside might result in explosions and fire. So always use the Protection board while using Li-Ion cells. Note: We do not recommend using this 3.7v 18650 lithium ion rechargeable battery for critical applications. The capacity and performance of the cell might vary based on charging and discharging parameters. Please note that we do NOT provide any guarantee/warranty on this product. Read our blog about Battery AH means , It covers all the details of batteries. Features: Safe to use, environment-friendly, and with long battery life High energy density for excellent continuous power sources Use with a protection circuit board to guard against over-charge, over-discharge, and over-current Easy to use in any circuit by soldering wires on the terminals or using battery holders Applications: Cordless Phones Tablet PC GPS iPod, DVD, MP4 Player, etc. Mobiles backup power supply/Power bank

11.1V 4500mAh Lipo Battery Lithium polymer battery Pack (LiPo) batteries are known for performance and reliability. Lithium polymer battery Pack (LiPo) batteries deliver the full rated capacity at a price everyone can afford. They are equipped with heavy-duty discharge leads to minimize resistance and sustain high current loads and stand up to the punishing extremes of aerobatic flight and RC vehicles. Here is a tutorial video on how to charge your LiPo battery using an iMax B6 multifunctional charger. SAFETY PRECAUTIONS: In order to maintain the efficiency and battery life of the LiPo batteries, avoid overcharging or over-discharging them. LiPo batteries must not be kept near hot devices, surfaces, or substances. This can lead to severe damage and/or fire. To avoid environmental damage, do not throw the Lithium Polymer batteries into water or fire. Never leave this battery on charge unattended. APPLICATIONS FOR THIS PRODUCT: LiPo batteries can be used in RC Cars Quadcopters RC airplanes Power various small low-powered embedded devices. Features of 11.1V 4500 mAh LiPo Battery: Battery Type LiPo Batteries Capacity (mAh) 4500 Output Voltage 11.1V Recommended Charge Rate 1-3C Maximum Discharge rate 35C Maximum Charging Rate 5C Dimensions 135 x 43 x 23 mm Weight 100 grams

5V 1 amp DC jack Adapter 5 Volt 1 Amp Power Adapter takes an AC INPUT of 100-270VAC and gives 5V 1A DC output Features Excellent Quality Short Circuit, Over Voltage & Over Current Protection Incredibly Low Fault Rates No Minimum Load This power supply is a regulated Center Positive power supply It's plug design is for Indian power socket so, no plug converter is required Compact size & light weight High Reliability Regulated Stable Voltage Good quality SMPS Based Adapter Stabilized Output, low ripple & low interference Single Output Voltage High Efficiency & low energy consumption check out : 5V 2Amp Single Jack Adapter

12V 15A Power Supply SMPS This industry power module SMPS converts AC power to 12V 15A DC. It has built-in over-voltage, over-current, and short circuit protection. Perfectly designed and well constructed, small and compact Size with an indicator. This is the switched-mode power supply (SMPS) which converts 100 - 264V AC to 12V DC. It can provide up to 15A maximum current. All types of protections such as over-voltage protection, over-current protection, short circuit protection, and surge-protected output, are provided in the supply. These 12V 15 Amp power supply achieve high efficiency and are robust to use; By using these latest 12 Volt 15 amp power supply, you can reduce your electricity bill. This SMPS will provide you with a constant output of 12V 15A means we can drive applications that have a maximum current rating up to 15A. It includes any type of motor with different RPM, thermoelectric Peltier, etc. It has passed the CE & RoHS certification. This power supply is built with high-quality and high-performance materials. This SMPS power supply has an LED power supply with a metal body for hidden installation for LED lighting. Features: Converts AC power to 12V 15A DC Built-in over-voltage, over-current, and short circuit protection Small and compact size with an indicator Suitable for various applications including servers, power stations, personal computers, vehicles, factories, industries, railway and security systems, and mobile devices LED power supply with metal body for hidden installation. Applications: Servers, power stations, and personal computers. Vehicles for charging batteries. Factories and industries for power. Used in the equipment used in railway and security systems. It is also used in mobile and also as lighting.

XL6019 DC-DC 5A Adjustable Boost Power Supply Module(RED) DC to DC step up module based on the upgraded XL-Semi XL-6019, offering up to 5A switching current and conversion efficiency of up to 97%. This XL6019 boost converter has two input pins for VCC and GND on the left side of the module. It has two output pins on the right side of the module. To get the desired output voltage you have to rotate the trimpot screw. It changes the feedback resistance value and thus the output voltage with respect to the input voltage. As this module is a step-up converter, therefore, the output current is always smaller than the input current. If the output power is greater than 10W then add the heat sink with the module otherwise it may damage the module. Features With reverse connect protection, output 5V / 12V / 24V adjustable, beyond LM2577 performance. The built-in thermal protection, over-current protection reliability. Wide input voltage range, the input voltage up to 35V. Adjustable output voltage, maximum support 40V. The built-in thermal protection, over-current protection full reliability protection circuit, high reliability. System conversion efficiency can achieve 90% above, convenient thermal design. TO263-5 l standard packaging, suitable for booster application within 30W. Also check the LM2596 Mini 360 Aircraft Power Supply Step-down Module . It is a non-isolated BUCK module with synchronous rectification. The module features an integrally molded power inductor and a synchronous rectifier control chip. It includes built-in 160°C thermal shutdown for safety and boasts low output ripple of 30mV (no-load).

12V 5A SMPS 60W DC Metal Switch Mode Power Supply This industry power module SMPS converts AC power to 12V 5A DC. It has built-in over-voltage, over-current, and short circuit protection. Perfectly designed and well constructed, small and compact Size with an indicator. This is the switched-mode power supply (SMPS) which converts 100 - 264V AC to 12V DC. It can provide up to 5A maximum current. All types of protections such as over-voltage protection, over-current protection, short circuit protection, and surge-protected output are provided in the supply. These SMPS are achieved high efficiency and robust to use; By using these latest SMPS, you can reduce your electricity bill. This SMPS will provide you with a constant output of 12V 5A means we can drive applications that have a maximum current rating up to 5A. It includes any type of motor with different RPM, thermoelectric Peltier, etc. It has passed the CE & RoHS certification. This power supply is built with high-quality and high-performance materials. This SMPS power supply has a led power supply with a metal body for hidden installation for led lighting Applications: It is used in servers, power stations, and personal computers. It is used in vehicles for charging batteries. It is used in factories and industries for power. It is used in the equipment used in railway and security system. It is also used in mobile and also as lighting.