#include <SDI12.h>
#define DATA_PIN 12
SDI12 mySensor(DATA_PIN);

void setup() {
Serial.begin(9600);
mySensor.begin();
delay(1000);
}

void loop() {

mySensor.sendCommand("0I!");
delay(320);

String response = "";
while (mySensor.available()) {
  char c = mySensor.read();
  response += c;
  delay(50); 
}
Serial.print("Wert: ");
Serial.println(response);

delay(3000); //milliseconds
}