Typical applications:

   
Automotive electronics
Audio and video equipment
UNO MEGA2560 DUE AVR MCU
AVR C8051 PIC 
Smart Home
Emergency lighting
    
 
Arduiuo uno/mega2560 Code
//******************************************************//
 
const int DPDT_control = 2; // the number of the DPDT_control pin
 
void setup() {
 
// initialize the DPDT_control pin as an output:
pinMode(DPDT_control, OUTPUT);
}
 
void loop() {
 
digitalWrite(DPDT_control, HIGH);//DTDT relay activation
 
delay(1000);
 
digitalWrite(DPDT_control, LOW);//DTDT relay inactive
 
delay(1000);
 
}
//******************************************************//
   
 

Product Name : 2x DC 12V DPDT Relay Board switch Module for ARM PIC AVR Motor LED PLC PLD FPGA

   
Module No.: CE-DR21C01_2P
  
Packing list:
 
2 PCS DR21C01 1 Channel DC 12 DPDT Relay Module

 

 
Description:
      
 
DR21C01 12VDC 1 Channel DPDT Relay Board
    
Operating Voltage : DC 12V
Operating Current(Relay ON): 15MA
Standby Current(Relay OFF) : <1MA
    
Input control signal voltage:
0V - 0.6V Low stage (relay is OFF),
0.6V – 2.5V (unknown state).
2.5V - 24V High state (relay is ON).
Input control signal high state current:
2.4V: 0.15mA
5V: 0.4mA
12V: 1.2mA
20V: 2mA
    
Relay Load : 1A 125VAC;2A 30VDC
Size : 22.86x18x14
Weight :7g