Relying on the industry's highest quality insulated optical coupler, it features strong interference resistance and stable performance; only 3 mA of trigger current is required. Output form: directly connected to AC 220V 10A or DC30V 10A load. Each COM shared endpoint is independent, and is suitable for users to access different. Each stage has a naturally closed and open port. Control voltage range: low-level trigger 0-2V; high-level voltage can not exceed 5V. 1-16 channels can be turned on/off as desired, or in any way.