// Pins  
 // Arduino pin 2 (RX) to ESP8266 TX  
 // Arduino pin 3 to voltage divider then to ESP8266 RX  
 // Connect GND from the Arduiono to GND on the ESP8266  
 // Pull ESP8266 CH_PD HIGH  
 #include <SoftwareSerial.h>  
 SoftwareSerial ESPserial(3, 2); // RX | TX  
 void setup()   
 {  
   Serial.begin(9600);   // communication with the host computer  
   // Start the software serial for communication with the ESP8266  
   ESPserial.begin(9600);   
   Serial.println("");  
   Serial.println("Remember to to set Both NL & CR in the serial monitor.");  
   Serial.println("Ready");  
   Serial.println("");    
 }  
 void loop()   
 {  
   // listen for communication from the ESP8266 and then write it to the serial monitor  
   while ( ESPserial.available() )  { Serial.write( ESPserial.read() ); }  
   // listen for user input and send it to the ESP8266  
   while( Serial.available() )    { ESPserial.write( Serial.read() ); }  

    String json = "/json.htm?type=command&param=udevice&idx=892&nvalue=0&svalue=0;0;0;0;510;0";
    ESPserial.print(json);
  delay(10000);
 }