Non-contact Water / Liquid Level Sensor XKC-Y25-NPN (24V)

• Open the back cover of the sensor head, use small screwdriver to adjust the sensitivity knob
• If counter clockwise rotate the knob, it will increase sensitivity, otherwise, it will decrease the sensitivity.

• สายสีน้ำตาล - VCC 5-12V
• สายสีน้ำเงิน - GND
• สายสีเหลือง - A0

void setup() {

  // initialize serial communication at 9600 bits per second:

  Serial.begin(9600);

}

// the loop routine runs over and over again forever:

void loop() {

  // read the input on analog pin 0:

  int sensorValue = analogRead(A0);

  // print out the value you read:

  Serial.println(sensorValue);

  delay(500);        // delay in between reads for stability

}