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SIM800L Power Board is a dedicated power supply board designed to stabilize the voltage and current for SIM800L GSM modules. It converts 5V to the required 4.2V, ensuring smooth operation without brownout issues. The board includes onboard filtering capacitors to reduce noise and interference. It prevents sudden voltage drops, improving GSM module stability. The compact design allows easy integration into embedded systems. It is essential for IoT applications requiring reliable cellular connectivity. The module features screw terminals for secure wiring.