Voltage Detection Sensor Module 25V
Review: 5 - "A masterpiece of literature" by , written on May 4, 20020

Voltage Detection Sensor Module 25V

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  • Product SKU: KG045
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Voltage Detection Sensor Module is based on a resistive divider principle design, making the interface terminal input voltage reduced 5 times. This is a simple but very useful module that uses a potential divider to reduce an input voltage by a factor of 5.

The 25V Voltage Sensor Module allows you to use the analog input of a microcontroller to monitor voltages much higher than it is capable of sensing. For example with a 0-5V analog input range, you are able to measure a voltage up to 25V. This voltage sensor module also includes convenient screw terminals for the easy and secure connection of a wire.

This Voltage Tester Sensor is based on the principle of resistive voltage divider design, which can make the red terminal connector input voltage 5 times smaller. 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). Arduino AVR chips have 10-bit AD, so this module simulates a resolution of 0.00489V (5V/1023), so the minimum voltage of the input voltage detection module is 0.00489Vx5=0.02445V.

  • This voltage tester module is based on a resistive divider principle design, making the interface terminal input voltage reduced 5 times.
  • The voltage detection module detects a minimum input voltage of 0.00489V × 5 = 0.02445V
  • DC 0~25V Voltage Detection Module Sensor
  • You can use it for Raspberry Pi via ADC but for the need for programmatical corrections.

Note: Keep in mind, you are restricted to voltages that are less than 25 volts. More than that and you will exceed the voltage limit of your Arduino input.

Pinout Diagram

Pin Configuration

  • Vcc : Positive terminal of the External voltage source (0-25V)
  • GNDNegative terminal of the External voltage source
  • S : Analog pin connected to Analog pin of Arduino
  • + : Not Connected
  • - : Ground Pin connected to GND of Arduino

Technical Details

  • Input Voltage (V): 0 to 25
  • Voltage Detection Range (V) : 0.02445 to 25
  • Analog Voltage Resolution (V) : 0.00489
  • Sensitivity: 100mV/A

Physical Attributes

  • Length * Width * Height in mm : 17 * 14 * 12
  • Weight (gm): 2

Integration with Arduino

Sample Code

Additional Details

  • Output Interface: “+ ” connected 5/3.3V, “-” connected GND, “s” connected Arduino AD pins
  • DC input interface: red terminal positive with VCC, negative with GND
  • You can also use the IICLCD1602 LCD to display voltage.
  • By 3P connector, connect this module with the expansion of board Arduino, not only makes it easier for you to detect voltage battery.

Product Video


Customer Reviews

Based on 5 reviews
Useful little boards

These little modules work just fine for measuring voltage. Although anyone could easily make their own, these are so cheap, why bother making your own

uttam kumar @ sanki
Very happy

Each and every one of the lot works perfectly.

Divide by 5 Voltage divider modules.

These are actually Divide By 5 Voltage Dividers consisting of 30K and 7.5K resistors. Accuracy is fair, about 1% and good enough for most applications. I am using them to scale down 50 watt solar panel voltages to within the 0-5 volt range of the Arduino Pro Mini's A/D inputs and they work good. Connections to the modules are a little strange but not a problem. For future projects though I will use individual 0.1% 30k and 7.5k resistors which I found recently at very good prices.

shsi kant
Works well

works well

Raspberry pi voltage reading

Works good. Slight varience in readings. Using with mcp3008 for reading voltage on raspberry pi. If you use this with raspberry pi make sure to use 3.3v to not burn out your gpio. And to stabalize readings pull multiple times and average reading. Adafruit mcp3008 tutorial works perfect.