Voltage Sensor Module

Resistive Voltage Divider Network: Built using a 5:1 resistive voltage divider circuit that steps down input DC voltages safely for low-voltage microcontrollers.

0V to 25V DC Input Sensing Range: Expands standard 5V microcontroller ADC input range up to 25V DC (or 16.5V DC on 3.3V logic boards like ESP32 and Raspberry Pi Pico).

High Precision Voltage Sampling: Provides linear voltage attenuation allowing microcontrollers to calculate real-time DC voltage levels with high resolution.

Dual-Screw Terminal Block: Outfitted with heavy-duty blue screw terminal blocks (V_CC and GND) for secure connection to high-voltage power lines and battery banks.

Standard 3-Pin Breadboard Interface: Features a standard 0.1'' (2.54 mm) header pin layout (S, +, -) for quick connection to breadboards and microcontroller development platforms.

Housing & Board Material: High-grade FR-4 glass-epoxy PCB with precision surface-mount resistors, blue screw terminal block, and tinned header pins.

Technical Specifications:

Input Voltage Range (V_IN): 0.024V - 25.0V DC (5V system) / 0.024V - 16.5V DC (3.3V system).

Voltage Divider Ratio: 5:1 (30 kΩ / 7.5 kΩ resistors).

Color: Blue PCB with Blue Terminal Block and Black Header Pins.

Usage Advice: Connect target DC voltage lines to the terminal block (V_CC / GND); connect pin S to your microcontroller ADC pin, pin - to GND, and leave pin + unconnected.

Maintenance: Keep terminal screws tight; protect the board from static discharge, dust, and exposure to liquids or moisture.

Essential DC Voltage Diagnostic Board: Position as a fundamental breakout board for monitoring battery levels, solar array voltages, power supply rails, and automated battery chargers.

Highlight Safe 5:1 Signal Attenuation: Emphasize how simple 5:1 stepping allows 3.3V and 5V microcontrollers to safely sample voltages up to 25V without damaging ADC pins.

Recommended Cross-Sell Add-ons: Pair with INA3221 Power Supply Voltage Monitor Board, AC Single Phase Voltage Transformer Sensor, TXS0108E Bi-directional Voltage Module, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Voltage Sensor collection page as your core resistive DC voltage sensor module.