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Keyestudio Single One Channel Solid State Relay Module FOR arduino

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Single-phase solid state relay is a low-level active solid state relay, that is, when the input control signal is low (0-1.5V), the relay ON; when the input control signal is high (3-5V) Relay OFF.
Solid state relay is a kind of a new non-contact switch device which is composed of solid electronic components. Compared with the electromagnetic relay, it is more reliable, and no contact, long life, fast, less interference to the outside world.


Keyestudio single One Channel Solid State Relay output control terminal to be connected to the circuit  and  the working current needs to be greater than 50mA,solid state relay can be properly disconnected.

Performance Parameters

Voltage  quiescent current     working current       trigger voltage            trigger current
   5V                 0mA                      12.5mA                   0-1.5V                        2mA

output port:AC240V/2A 

       Connection Diagram      


Sample Codes

 int Relay = 3;

  void setup()


  pinMode(Relay, OUTPUT);     //Set Pin3 as output


void loop()


          digitalWrite(Relay, HIGH);   //Turn off relay


          digitalWrite(Relay, LOW);    //Turn on relay





Complete the wiring as shown above, and then turn on the power, disconnecting the solid state relay 1S and then connecting 1S, cycle alternately.


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