A high-precision timer relay module with stable and reliable performance. Supports reverse input protection and features a trigger button switch. Power on and press the trigger switch to activate the load; the load turns off after the preset delay time. Time range is adjustable from 1 second to 10 seconds via potentiometer; for longer timing, replace with a larger capacitor or potentiometer. Suitable for use in timing control equipment, robotics, intelligent product development, automation systems, PLC development, smart home security alarm delays, and electronic projects. Features: - High-precision timer relay module with stable and reliable performance - Reverse input protection supported - Equipped with a trigger button switch - Activate load by pressing the trigger switch; load turns off after delay - Timing range: 1 to 10 seconds, adjustable via potentiometer - Timing duration can be extended by replacing capacitor or potentiometer - Ideal for timing devices, robots, intelligent products, automation equipment, PLC development, smart home alarm systems, and electronic development Specifications: - Load Capacity: 10A 250VAC, 10A 30VDC - Size: 67.6 x 19.2mm / 2.66 x 0.75 inches - Quantity: 1 piece Package Includes: 1 x Timer Module