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This is an ESP32 Wi-Fi and bluetooth Based 8-Channel Relay Module for Home Automation Project. This Board Included the Esp32 module, 4-Channel 5V Relays, 817 Opto-couplers and through-hole LED for indication purposes. This ESP32 -based Relay Module is suitable for wirelessly controlling appliances via WiFi and bluetooth. It is a four-channel relay module that can control up to 250V AC and 30V DC with a load capacity of 7A. The module has an LED that lights up depending on the module's condition. When a signal is received on the IN pin, a red power activation LED illuminates. When a signal is received, the relay triggers, connecting the output pins with an audible click. The integrated ESP32 is used to control the relay. ESP will manage everything once programmed and powered, making it suitable for internet of things (IoT) projects.