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<ul><li>Better Control: One on board MCU controls LED, and the IO port can connect to P3.2 for output, such as PWM wave modulation experiment.</li><li>One Way Switch: One channel switch chip on board, connect to IO port P3.3, which can be used for input, interrupt and other experiments.</li><li>Stable Working: The switches and LEDs of the external chips of the IO port do not affect the normal use of the IO port.</li></ul>

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Specification: Item Type: Microcontroller System Board Material: PCB Board Size: Approx. 12 x 18mm / 0.47 x 0.71in Package List: 4 x Microcontroller System Board4 x Pin Header

Universal Product Code (UPC check)

Microcontroller System Board, STC15W204S PCB 1 Channel Switch Chip Wide Application MCU Development Module 4 Sets  For PWM Wave Modulation