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Uninterruptible Power Supply UPS HAT (B) for Raspberry Pi, 5V Output, up to 5A Current, Pogo Pins Connector - PiShop.us
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Raspberry Pi Documentation - Raspberry Pi hardware
Use the Raspberry Pi GPIO Pins as Digital Inputs and Outputs - MATLAB & Simulink
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GPIO Electrical Specifications, Raspberry Pi Input and Output Pin Voltage and Current Capability
