2Pcs DC 12V 20A Digital Cyclic Timer Relay Quick overview A pair of compact, digital cyclic timer relays designed to automate repetitive on/off cycles in 12V DC systems. Each relay is rated to switch loads up to 20A, providing reliable timed control for pumps, lights, fans, motors and other DC devices. Key benefits Reliable automation: Run devices on a repeated schedule without manual intervention, improving consistency and reducing labor. current capacity: 20A switching rating supports moderate power loads directly, reducing the need for separate power relays. Precise digital timing: Digital control provides repeatable, adjustable timing for consistent cycle lengths and improved process control. Space and costefficient: Sold as a pack of two for multiple installations or redundant applications. What this product does These digital cyclic timer relays repeatedly switch a connected 12V DC load on and off according to userset time intervals. They are designed to be installed inline with the load and supply, enabling automatic cyclic operation such as periodic flushing, intermittent lighting, or dutycycled motor control. Key attributes Supply voltage: DC 12V (designed for 12V DC systems) Maximum output current: 20A (switching capacity per relay) Functionality: Digital cyclic (repeat on/off cycles) timing control Package contents: 2 pieces (two identical timer relays) Intended use: Inline switching of DC loads that require repeated timed cycles Performance and compatibility Works with common 12V DC systems (automotive, marine, solar, batterypowered, and 12V control circuits). 20A rating covers many DC loads such as LED arrays, pumps, small motors, solenoids, and fans. Confirm your device's starting and running current to ensure compatibility. Digital timing enables consistent, repeatable cycles suitable for process control and energy savings. Typical applications Aquarium and pond systems: Cycle pumps or aerators to control circulation and reduce wear. Automotive and marine: Automate lights, ventilation fans, or wash systems on a timed repeat cycle without modifying the vehicle wiring. Irrigation and small watering systems: Periodically cycle small 12V pumps or solenoids for controlled watering or misting. HVAC/ventilation: Dutycycle fans to maintain airflow on a schedule and reduce continuous run time. Installation and use tips Confirm your load's inrush and steadystate currents; if inrush exceeds the relay's capabilities, use an appropriate external relay or contactor. Wire only with the power disconnected. Ensure correct polarity for the 12V supply and secure connections to handle the rated current. Place the relay in a dry, ventilated location away from excessive heat or moisture to maintain reliable operation. Why customers choose this relay This 2piece set gives users a straightforward way to add reliable, repeatable timed control to 12V DC systems with a 20A switching capacity. It is useful whenever automating cyclic tasks improves efficiency, consistency, or convenience.