Description 1 Put on the power relay and delay suction Specifically after supplying 12V power supply to relay relay will not absorb immediately The state of output terminal of relay is normally open and public disconnect normally closed and public conduction when the delay is 1 10S adjustable the relay sucks At this time the state of output terminal of relay is normally open and public conduction often closed and public disconnection as long as the module is continuously powered this state will be maintained Hold 2 Adjustable delay time 0 10 seconds 4 Increasing potentiometer can increase delay time5 Increasing capacitance C1 can increase delay time6 Indicator lamp with input power supply7 Suction indicator with relay8 Controllable 220V 10A AC equipment Maximum Control Equipment 2000W 9 It has relay continuous current protection 10 Delay time formula T 1 1RC For example capacitance 100uF resistance 100KT 1 1 100000 0 0001 11 secondsFeature Size 6 8CM x 2 1CMMain chip NE555Working Voltage 12V DC Package Included 3 x NE555 Chip Time Delay Relay Module