A high-precision timer relay module with stable and reliable performance. Supports reverse input protection and includes 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 adjustable from 1 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, stable, and reliable timer relay module - Reverse input protection supported - Built-in trigger button switch - Load activates upon power and switch press, turns off after delay - Adjustable timing from 1 to 10 seconds using potentiometer - Timing extension possible by replacing capacitor or potentiometer - Ideal for timer-operated devices, robots, 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