The AB011D Active Buzzer Module provides a loud 85dB alert at 2.5kHz, operating from 3.3V–5V. Compact and breadboard-friendly, it’s ideal for alarms, timers, and audio indicators in Arduino, Raspberry Pi, and microcontroller-based embedded projects.

The USBCMC 5V Step-Up Power Module with Type-C interface provides efficient battery charging and discharging management. With built-in protection features, precise 4.2V charging, and 85% conversion efficiency, it is ideal for DIY power banks, portable electronics, and embedded projects.

The AA736 Mini Solar LiPo Charger Board, based on the CN3065 chip, delivers efficient 500mA charging from solar panels or other photovoltaic sources. Compact and easy to use, it’s ideal for portable electronics, DIY solar projects, and lithium battery charging.

The AA766 USB Female to 2.54mm Breakout Board provides an easy way to integrate USB power or data into DIY projects. With a standard USB 2.0 female socket and 4P adapter pins, it eliminates delicate soldering and ensures reliable, quick connections.

The AA765 USB Type-B Female to DIP Breakout Board provides a simple way to interface USB Type-B connectors with development boards or DIY circuits. With 4-pin breakout (VBUS, D-, D+, GND), it is ideal for prototyping, printers, and embedded projects.

The BUTMC Big Key Button Module is an easy-to-use input device for Arduino and other microcontrollers. Featuring five large, colorful buttons, it outputs distinct voltages for each key, enabling simple analog input reading for interactive projects, prototyping, and learning.

The NA66B is a high-power DC-DC boost converter designed for versatile applications. With adjustable output voltage (12–80V) and current (up to 10A), it delivers 600W of stable power. Built-in overcurrent and short-circuit protection ensures reliability, making it ideal for DIY power systems and electronics.

The CD74HC4067 is a versatile 16-channel analog/digital multiplexer and demultiplexer module. It allows routing of one common signal pin to 16 channels using only 4 control pins. Supporting both analog and digital signals, it simplifies sensor expansion, communication routing, and multi-device interfacing in microcontroller projects.

The CH18650 is a universal 18650 lithium battery charger designed for home and travel use. Operating on AC 100–240V, it provides a safe 3.7V/500mA DC output with a 4.2V termination voltage. Featuring auto cut-off, LED status indication, and EU plug compatibility.

The LM2596HV Buck Converter efficiently steps down DC voltage from 4.5V–50V to an adjustable 3V–40V output. With up to 92% efficiency, it includes over-current and over-temperature protection, ensuring safe operation. Ideal for battery charging, regulated supplies, and DIY electronics projects.

The MP1584F is a compact DC-DC step-down module that converts 4.5V–28V input to an adjustable 0.8V–20V output. With up to 3A output current, soft-start, and built-in current limiting, it ensures stable power regulation for embedded systems, DIY electronics, and IoT devices.

The LM228 DC-DC Power Module efficiently converts 6V–12V input into stable 3.3V, 5V, and direct input outputs. With built-in on/off control, dual-row pin headers, and LED power indication, it’s ideal for embedded projects, breadboards, and DIY electronics requiring multi-voltage regulation in a compact module.