LED Voltage Meter (Blue)

The LED Voltage Meter (Blue) is a compact, standalone DC voltage indicator designed for fast and reliable power monitoring. Measuring from 3.0V to 40V DC with 1% accuracy, it gives clear real-time feedback on battery levels and power rails. It is well suited for students, hobbyists, and makers building robotics or portable electronics projects.

Simple two-wire operation

The module requires only a direct two-wire connection to the measured power source, powering the display and taking readings simultaneously. This self-contained setup eliminates the need for microcontrollers, external circuitry, or calibration procedures.

Wide DC voltage range

With an operating measurement range of 3.0V to 40V DC, the meter delivers dependable performance across various power configurations. It features 1% measurement accuracy alongside a 2 Hz refresh rate for stable, real-time data.

Clear digital display

The bright blue LED panel provides immediate visual feedback of supply voltages, making it easy to read at a glance. Its compact form factor integrates neatly into battery enclosures, control panels, and custom maker builds.

Versatile diagnostic applications

This voltmeter is ideal for battery charge monitoring, motor driver diagnostics, robotics platforms, and classroom electronics experiments. It offers quick visual confirmation of supply health without requiring complex benchtop instruments.

Included in the box

The package includes one standalone blue LED voltage meter module ready for direct wiring into your project.