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The 2 CH Opto Relay MOD (5V) provides dual relay control with optocoupler isolation, making it perfect for automation and electronic switching applications. It allows microcontrollers to safely manage high-power AC and DC devices, reducing the risk of electrical damage. With its dual-channel configuration, users can control two independent loads simultaneously, increasing efficiency. Each relay supports both normally open (NO) and normally closed (NC) contacts for flexible switching operations. The optocoupler protection ensures noise immunity, making it suitable for sensitive circuits and industrial environments. Its onboard LED indicators provide real-time relay status feedback, simplifying troubleshooting and setup. This module is ideal for IoT projects, home automation, and smart energy management systems.