This relay module is 5V active low. It is a single channel relay interface board, which can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, PLC, etc.
The EGS002 is a board unit designed for single-phase pure sine wave inverters. Using a single-phase pure sine wave inverter dedicated chip EG8010 as the control chip, the IR2110S driver With LCD Display.
The HW-040 Rotary Encoder Module is a device that generates an electrical signal based on how much the rotary input device (knob) is rotated and the direction it is rotating
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