Designed for PLC automation equipment control, industrial system control, IoT control, electronics enthusiasts for experiments, and various circuit modifications. Key features and benefits - Each channel uses optocoupler insulation to provide strong anti-interference capability and safe isolation between control and load circuits. - Control the load with a high-performance relay rated up to 30A, enabling reliable switching of demanding equipment. Why you need it - Safe isolation reduces noise and interference from high-current loads into control systems. - High current rating supports a wide range of loads in automation and experimentation. - Simple integration with PLCs, industrial controllers, and IoT control networks. 2-3 practical use scenarios - PLC automation equipment control on manufacturing lines, where reliable switching and isolation are essential. - Industrial system control and IoT gateway interfaces that manage remote equipment and sensors. - Electronics hobbyist projects, experiments, and circuit modifications that require switching up to 30A. Compatibility and performance notes - Designed for use with standard control signals in automation and IoT applications. - Emphasizes isolation, interference resistance, and high-current relay switching without adding extraneous features.