The delay relay module is widely used in timer operation equipment, robot, intelligent product development, automation equipment, PLC development, intelligent home security alarm delay, electronic development and so on.The delay relay module is widely used in timer operation equipment, robot, intelligent product development, automation equipment, PLC development, intelligent home security alarm delay, electronic development and so on.The time range is 1 second to 10 seconds, regulated by the potentiometer; If you need longer, simply replace a larger capacitor or potentiometer.The timing switch module supports reverse input protection and has a trigger switch.When power is on, press the trigger switch to start the load, and shut down the load after delay.Delay relay is a timing relay module with high precision and stable and reliable performance