DC Voltage Sensor Module 0V to 25V

DC Voltage Sensor Module (0V to 25V) is a compact, high-precision voltage divider module designed to measure external direct current (DC) voltages using microcontrollers with analog-to-digital converter (ADC) pins. Built around a resistive voltage divider principle with a 5:1 scaling ratio, this module scales down input voltages ranging from 0V up to 25V DC into a safe 0V to 5V analog output range. Featuring screw terminal blocks for secure wire attachment and standard pin headers for easy microcontroller interfacing, it is an essential component for battery voltage monitoring, solar power tracking, power supply testing, and robotic power management systems.

Features

• Wide voltage detection range from 0.024V up to 25V DC (ideal for 3.7V, 5V, 9V, 12V, and 24V power systems)
• Built on a precise voltage divider resistor network providing a stable input-to-output voltage ratio of 5:1
• Standard 3-pin analog output interface (Signal, VCC/NC, Ground) compatible with 3.3V and 5V ADC microcontrollers
• Screw terminal block on one end for fast and secure connection of positive and negative power wires
• Standard pin headers on the other end for direct jumper connection to Arduino, ESP32, and Raspberry Pi boards
• Compact PCB layout with pre-drilled mounting holes for secure installation inside project enclosures
• Low power consumption and passive resistive design ensuring reliable, maintenance-free operation
• Perfectly suited for reading multi-cell LiPo battery voltages, automotive levels, and industrial rails

Applications

• Battery voltage monitoring systems for 12V lead-acid or 2S–6S Li-ion/LiPo battery packs
• Solar panel output voltage tracking and renewable energy generation monitors
• DIY digital multimeters, benchtop power supply voltage meters, and battery capacity indicators
• Automotive electrical system testing, electric vehicle (EV) battery health monitors, and robotics power rails
• Polytechnic diploma, university engineering thesis, and Arduino/ESP32 sensor monitoring projects

Important Notes:

• Maximum Voltage Limit: Never connect DC voltages higher than 25V to the input terminals. Voltages exceeding 25V will output more than 5V on the signal pin, which can permanently fry your microcontroller's analog input (ADC) pin.
• ADC Scaling Formula: In your microcontroller code (e.g., Arduino IDE), multiply the read analog voltage value by the 5.0 multiplier factor to calculate the true incoming DC voltage: Actual Voltage = (Analog Reading 5.0 / 1024.0) 5.0.
• Common Ground Required: Ensure the ground (GND) of the measured power circuit is securely connected to the GND pin of the voltage sensor module and your microcontroller.
• Not for AC Measurement: This module is strictly designed for DC (Direct Current) voltages. Do not connect it to AC household mains or alternating current circuits.

Package includes

• 1 x DC Voltage Sensor Module (0V to 25V)