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Description:

• Quantity:1pc
• Size: 25mm×13mm/0.98″×0.51″(approx)
• TThis module is based on principle of resistive voltage divider design, can make the red terminal connector input voltage to 5 times smaller.for Arduino analog input voltages up to 5 v, the voltage detection module input voltage not greater than 5Vx5=25V (if using 3.3V systems, input voltage not greater than 3.3Vx5=16.5V). for Arduino AVR chips have 10-bit AD, so this module simulates a resolution of 0.00489V (5V/1023), so the minimum voltage of input voltage detection module is 0.00489Vx5=0.02445V.
• Voltage input range : DC0-25 V
• Voltage detection range : DC0.02445 V-25 V
• Voltage analog resolution : 0.00489 V
• Output Interface : “+ ” connected 5/3.3V, “-” connected GND, “s” connected for Arduino AD pins
• DC input interface : red terminal positive with VCC, negative with GND
• By 3P connector, connect this module with the expansion of board for Arduino, not only makes it easier for you to detect voltage battery, can also use the IICLCD1602 LCD to display voltage.

• Reference Code:
  #include

  int val11;
  int val2;

  void setup()
  {
  pinMode(LED1,OUTPUT);
  Serial.begin(9600);
  Serial.println(“Emartee.Com”);
  Serial.println(“Voltage: “);
  Serial.print(“V”);
  }
  void loop()
  {
  float temp;
  val11=analogRead(1);
  temp=val11/4.092;
  val11=(int)temp;//
  val2=((val11%100)/10);
  Serial.println(val2);
  delay(1000);
  }

Packaging: