It is a relay module with high, stable, and reliable performance. It supports reverse input protection and comes with a trigger button switch. Power on and press the trigger switch to turn on the load, and the load will turn off after the delay time. The time range is from 1 second to 10 seconds, adjustable by potentiometer; for a longer delay, simply replace with a larger capacitor or potentiometer. Widely used in operating equipment, robots, intelligent product development, automation equipment, PLC development, smart home anti-theft alarm delay, and electronic development. Equipped with diodes to prevent reverse power connection, allowing safe and confident wiring. Specifications: Working Voltage: 12V Load Capacity: 10A 250VAC, 10A 30VDC Color: blue Material: PCB + Components Note: The buttons on the cable are random colors; specified color requests cannot be accepted. Package Contents: 1 x Module 1 x Cable Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. Measurement may vary by +/- 1-3cm.