Feature●EFFICIENCY: 12V trigger delay normally open relay module, repeatedly triggering effective●DELAY TIME: delay time can be adjusted by potentiometer, default 0-25 seconds, if you need more time, simply replace a larger capacitance or potentiometer●GREAT PROTECTION: power supply terminal has anti-reverse diode for protection●: trigger can be high level or low level , suitable for industrial control, the module can be triggered repeatedly●APPLICATION: time delay relay can be used in robotics, car lamp delay, intelligent product development, automation equipment, PLC development, intelligent home, burglar alarm delay, and development of electronicDescription