Description Wide voltage 5V 30VTime can be adjusted via a potentiometer meeting your most occasionsMicro USB 5 0V power supply with input easy to use5 30V wide supply voltageExternal triggering and onboard buttons Two triggering methodsWith a relay pull in indicatorInterference ability under various interference will not malfunction relay for industrial control Module features 1 Working voltage Wide voltage any voltage between 5 30V Micro USB power connector and two solder terminals2 Operating mode feed the module power output of the module state normally open NO and the common terminal COM disconnected normally closed NC and the common terminal COM is turned on Originating outside the contact TRIG to a low pulse signal or touch trigger button and instantly the relay and working lights this time the status of the relay output normally open NO and the common terminal COM is turned on Normally Closed NC and the common terminal COM is disconnected after 0 24 seconds this time can be adjusted according to your needs relay opens after the bell then relay back to the state before the trigger 3 The time can be adjusted via a potentiometer default 0 24 seconds If you need more time more replaceable capacitor C2 or potentiometer Delay time formula T 1 1RC For example 1M resistor capacitor 22uf then T 1 1 0 000022 1000000 24 2 seconds 4 With a relay indicator 5 The module can be controlled 10A 250VAC AC 10A 30VDC dire