3pcs 12V Power On Delay Relay Module Delay Circuit Module NE555 Chip Geekcreit for Arduino - products that work with off

Description The module when power is turned on the timer is started immediately time range is adjustable the relay immediately pull switched common terminal of the relay and often the beginning of the end of the time delay the relay is released the common and normally closed terminal is turned on Feature Imported high quality delay chip design the performance is far better than the 555 chipDelay time range selection the shortest 0 1 seconds up to one hour to meet most of the demandAgainst power reversal protection diode the effective protection of the productCan be accessed by high current loads AC 250V 10A DC 30V 10A Time delay adjustment potentiometer clockwise adjustment will be more longHow it works When the module trigger terminal has sensed the switch momentary close then the module start delay time function at the same time the relay closed when the time delay finish the relay will returns to the normally closed terminal When the module is triggering delay if there are trigger signal is received again the module will restart timing automatically trigger the last time until the end of the delay Delay time selection method switch S1 S2 S4 to a different position the potentiometer can adjust different time range Application The tachograph GPS start protection household appliances electronic equipment protection sound protection industrial control PLC control electronic experiments robot the range of applications is very wide range No in