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The 8 CH Opto Relay MOD (5V) is a high-capacity relay module with eight independent relays, enabling seamless control of multiple electrical devices. Designed for large-scale automation projects, it features optocoupler isolation for enhanced circuit protection and noise immunity. Each relay can be controlled separately, providing flexibility for a variety of applications such as lighting control, motor switching, and power distribution. With both NO and NC terminal options, it ensures compatibility with different switching configurations. The onboard LED indicators offer real-time status feedback, making troubleshooting easy. Operating at 5V DC, this module integrates smoothly with Arduino, ESP32, and Raspberry Pi-based automation systems. Ideal for industrial applications, smart homes, and IoT-based projects, the 8-channel relay module offers reliability and efficiency in power control.