25V DC Input Voltage Sensor Module Tester Board This module measures higher DC voltages safely by using a built-in resistive voltage divider that scales the input voltage down by a factor of 5. The reduced output voltage is suitable for analog inputs on common microcontroller platforms, making voltage monitoring simple and reliable for a wide range of electronics projects. Designed with easy-to-use screw terminals and a compact form factor, this voltage sensor module supports both 3.3V and 5V systems and integrates easily into DIY and embedded applications. How It Works The onboard resistive voltage divider converts an input voltage of up to 25V DC into a proportional output voltage of up to 5V DC. This allows higher voltages to be measured using standard analog-to-digital converter (ADC) inputs. Key Features Safely measures voltages above typical microcontroller ADC limits Accurate 5:1 resistive voltage scaling Compatible with Arduino, Raspberry Pi (with ADC), ARM, PIC, and similar platforms Supports both 3.3V and 5V operating systems Screw terminal connectors for secure and simple wiring Compact and lightweight design for embedded projects Technical Specifications Specification Details Product Type Resistive Voltage Divider Module for Analog Voltage Measurement Maximum Input Voltage 25V DC Maximum Output Voltage 5V DC Divider Ratio 5:1 Output Current Up to 600mA (max) Voltage Detection Range 0.02445V – 25V DC Analog Voltage Resolution Approx. 0.00489V (10-bit ADC) Operating Voltage 3.3V or 5V systems Interface Screw terminals for input, output, and ground Dimensions 25mm x 13mm (0.98″ x 0.51″) What’s Included 1 × 25V DC Input Voltage Sensor Module Tester Board Ideal Applications Voltage monitoring in battery-powered circuits Power supply measurement Arduino and microcontroller-based sensor projects DIY electronics and robotics applications Safe voltage measurement using standard 0–5V ADC inputs Usage Guidelines Connect the “+” terminal to the input voltage (maximum 25V DC) Connect the “–” terminal to system ground Connect the “S” terminal to a microcontroller analog input pin Do not exceed 25V DC input for accurate and safe operation Adjust voltage calculations when used with 3.3V systems
