KS0266 keyestudio Eight-channel Solid State Relay Module

1. Introduction

Keyestudio eight-channel solid state relay is active at HIGH level, that is to say, the input control signal is the high level (3.3-5 V), the relay is on; while the input control signal is low level (0-2.5 V), the relay is off.

Solid State Relay is a new kind of contactless switching device, which is composed of all solid state electronic components.

Compared with the electromagnetic relay, it has higher reliability, with the features of non-contact, long service life, fast speed and less outside interference.

The output control terminal of keyestudio solid-state relay must be connected to the circuit, can only be AC (Alternating Current) , so that the solid state relay can be disconnected normally.

2. Performance Parameters

• Electrical parameters:

	Voltage	Static Current	Working Current	Trigger Voltage	Trigger Current
Channel 1	DC 5V	0mA	13.8mA	3.3-5V	2mA
Channel 2	DC 5V	0mA	26.8mA	3.3-5V	2mA
Channel 3	DC 5V	0mA	37mA	3.3-5V	2mA
Channel 4	DC 5V	0mA	48mA	3.3-5V	2mA
Channel 5	DC 5V	0mA	59mA	3.3-5V	2mA
Channel 6	DC 5V	0mA	70mA	3.3-5V	2mA
Channel 7	DC 5V	0mA	81mA	3.3-5V	2mA
Channel 8	DC 5V	0mA	90mA	3.3-5V	2mA

• Output port： AC 100V/2A

3. Connection Diagram

3. Sample Code

Download code : Code

int BASE = 3 ;  //The first relay I/O port
int NUM = 8 ;  //Total number of relay

void setup()
{
   for (int i = BASE; i < BASE + NUM; i ++) 
   {
     pinMode(i, OUTPUT);   //Set the digital I/O port to output
   }
}

void loop()
{
   for (int i = BASE; i < BASE + NUM; i ++) 
   {
     digitalWrite(i, HIGH);    //Set the digital I/O port outputs to "HIGH", that is, gradually open relay
     delay(200);        //delay
   }
   for (int i = BASE; i < BASE + NUM; i ++) 
   {
     digitalWrite(i, LOW);    //Set the digital I/O port outputs to "LOW", that is, gradually close relay
     delay(200);        //delay
   }  
}

4. Result

Wiring as the above image, after powered-on, eight-channel solid state relays are first connected and then broken successively,repeating alternately.