QW2672 Torch Light Emergency Light Controller Module STM32F401CCU6 price and A4 are free and

and A4 are free and you can use them to connect this shield

Voltage Output of One 1 AA Battery Holder: 1

They are commonly used in devices that are not used frequently but need to be powered for long periods

Integrated oscillator and control circuit

Delay shutdown time: 16~350 Secs ± 30% （adjustable）

QW2672 Torch Light Emergency Light Controller Module STM32F401CCU6 price and A4 are free andThe QW2672 E is a specialized chip designed for efficient flashlight lighting control. Whether youre building a compact flashlight or a more complex LED system, this chip offers essential features and protection mechanisms. Heres what you need to know: High Precision Battery Management: The QW2672 E integrates single cell lithium battery management, ensuring optimal performance and longevity. Features include overcharge protection, over discharge