Adjustable Delay Timer Delay range from 0 to 10 seconds (varies by version), enabling timed poweron or shutdown for applications that require precise sequencing. Monostable Trigger Function Activates the relay output for a preset time when triggered, then automatically returns to the default state for reliable, repeatable operation. Wide Compatibility Operates from a 5V input, ideal for integration into lowvoltage systems including automotive circuits and microcontroller projects. Clear Indicator Lights Builtin status LEDs provide realtime monitoring of the operating state and timing cycle for easy troubleshooting and setup. Benefits and why you need it Simplifies timing control: no external components required for you to implement a timed relay action. Predictable actuation: a defined ontime per activation ensures consistent behavior in automated sequences. Easy integration with 5V systems: straightforward to wire into automotive, microcontroller, and other lowvoltage projects. Quick visual feedback: LEDs make it easy to verify status at a glance and monitor timing progress. What makes it stand out Monostable timing with automatic reset delivers reliable, singleshot relay acts without additional circuitry. Compact, plugandplay solution designed for 5V ecosystems, minimizing wiring and setup effort. Realtime indicators reduce debugging time and confirm correct timing and state transitions. Use scenarios Automotive accessory control: use the delayed relay to power a dash cam, sensor, or auxiliary light after engine start, with a controlled ontime and a clear status indicator. Microcontroller projects: connect to an Arduino, ESP32, or similar device to actuate a relay for a precise interval when a sensor is triggered or a condition is met. Home automation and small equipment sequencing: implement safe poweron sequences for pumps, fans, or heaters, ensuring devices ramp up or turn off with a defined delay to prevent surges and improve reliability.