Poweroff memory function: This delay relay switch module saves timing parameters after a power outage, ensuring settings persist and operation can resume without reconfiguration, for convenience and continuity. Cycle timing function: After poweron, the relay turns on for a set duration, then turns off for a set duration, and repeats. This provides precise, repeatable timing control for automated tasks. Optical coupler isolation: The relay output uses optical isolation, enhancing antiinterference capability and delivering stable, reliable operation in noisy environments. Wide application: Designed to control the onoff of devices such as solenoid valves, water pumps, and motors. Its timing and isolation features make it versatile for various automation tasks. Practical use scenarios: Irrigation/dosing: Use the cycle to periodically open a valve for even distribution without continuous operation. Pump cycling: Schedule on/off periods to maintain a steady flow and reduce wear from constant operation. Motor or actuator control: Implement timed activation to manage a valve actuator or small motor, improving control and longevity.