Features: It is a relay module with high precision, stable and reliable performance. It support reverse input protection and comes with a trigger button switch. Power on and press the trigger switch to turn on load, and turn off load after delay time. The time range is from 1 second to 10 seconds adjusted by potentiometer; if you need longer time, simply replace a larger capacitor or potentiometer. Widely used on operating equipment, robots, intelligent product development, automation equipment, PLC development, smart home anti-theft alarm delay, electronic development, etc Specifications: Working Voltage: 12V Load Capacity: 10A 250VAC, 10A 30VDC Delay Time: 1~10s Due to different batches, the appearance, color, and printed words of the product , which does not affect its use. size: 67.6 x 19.2mm Material: PCB colour: blue Package Contents: 1 x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.