Power Off Memory Function This module retains its settings after a power outage, enabling seamless operation without reconfiguration. Cycle Control Circuit The relay switches on and off at set intervals, making it suitable for applications that require timed control of devices. Optical Coupler Isolation Optical isolation reduces interference and provides stable performance in sensitive electronics. Wide Applicability Suitable for controlling solenoid valves, water pumps, and motors, supporting a variety of projects and tasks. Use scenarios Irrigation timer: Pair with a valve and scheduling logic to water plants on a defined timetable without manual intervention. Small pump automation: Cycle a water pump in a closedloop system to achieve controlled circulation and energy efficiency. Laboratory or bench automation: Use isolated control of motors or valves in test setups to prevent interference with sensitive instruments.