Description
Voltage Detection Sensor Module 25V – DC Voltage Sensor
The 25V Voltage Detection Sensor Module is a compact voltage measurement module designed to help compatible microcontrollers monitor DC voltage levels.
The module uses a voltage-divider circuit to reduce the input voltage to a level that can be safely measured by a microcontroller’s analog input. It is commonly used with Arduino and other compatible development boards for battery monitoring, power-supply measurement, robotics, and DIY electronics projects.
The module provides a simple and convenient way to interface higher DC voltages with low-voltage analog input systems.
Key Features
- Designed for DC voltage measurement
- Maximum input voltage: up to 25V
- Voltage divider circuit for analog measurement
- Compact module design
- Easy to interface with Arduino and compatible microcontrollers
- Useful for battery voltage monitoring
- Suitable for robotics and DIY electronics
- Useful for power-supply monitoring projects
- Simple three-pin interface on common versions
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Voltage Detection / Measurement Module |
| Maximum Input Voltage | 25V DC |
| Measurement Type | DC Voltage |
| Circuit | Voltage Divider |
| Output | Analog Voltage |
| Interface | VCC / GND / Signal* |
| Application | Voltage Monitoring & Measurement |
| Suitable For | Arduino, Microcontrollers, Robotics & DIY Electronics |
*Pin labels and exact module configuration can vary between product versions.
Typical Pin Configuration
| Pin | Function |
|---|---|
| VCC / + | Voltage Input |
| GND / – | Ground |
| S | Analog Signal Output |
The exact labeling may vary depending on the PCB version.
How It Works
The module uses a resistor voltage divider to reduce the input voltage before it reaches the analog input of a microcontroller.
For example, when connected to an Arduino, the Arduino’s analog input can read the reduced voltage and software can calculate the corresponding input voltage.
A typical calculation is:
Input Voltage = Measured Analog Voltage × Voltage Divider Ratio
The exact conversion ratio should be confirmed for the specific module before using it for accurate measurements.
Applications
- Battery voltage monitoring
- Arduino voltage measurement
- Power supply monitoring
- Robotics projects
- Solar power projects
- Embedded electronics
- DIY electronics
- RC projects
- Automotive electronics prototypes
- Educational electronics
Important Note
The stated 25V maximum input should not be exceeded. This module is intended for DC voltage measurement and should not be connected directly to AC mains voltage.
For accurate voltage measurement, the voltage-divider ratio, resistor tolerances, microcontroller ADC reference voltage, and module specifications should be taken into account. Always verify the module’s actual circuit and ratings before connecting it to your project.
This is a simple but very useful module which uses a potential divider to reduce an input voltage by a factor of 5. The Voltage Sensor Module 25V allows you to use the analog input of a microcontroller to monitor voltages much higher than it 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 easy and secure connection of a wire.
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