LED Voltage Meter (Red)

LED DC Voltage Meter (3–30V) is a compact standalone digital panel gauge designed for quick DC voltage monitoring without external circuitry. This miniature voltage display module measures electrical potential from 3.0V to 30V DC with 1% accuracy, making the unit suitable for battery-powered electronics, robotics builds, and embedded hardware diagnostics. A simple two‑wire connection enables instant voltage readout, eliminating the need for additional signal conditioning boards. The small footprint and bright LED numeric display allow seamless integration into battery packs, portable equipment, DIY robotics controllers, and embedded monitoring systems requiring clear, real‑time voltage feedback.

Direct Two‑Wire Voltage Measurement

This digital voltage monitoring module operates as a fully standalone measurement tool. A direct two‑wire connection to the measured power source enables immediate voltage readout without external resistors, controllers, or signal conversion circuits. Such simplified integration reduces wiring complexity in embedded electronics and robotics builds. The compact DC voltage display board therefore works effectively for battery level indication, power supply diagnostics, and quick voltage verification during prototyping, where immediate measurement feedback is required without additional electronics.

Wide 3–30V Measurement Range with Reliable Accuracy

This miniature DC voltage indicator supports measurement from 3.0V to 30V DC with approximately 1% accuracy and a refresh rate of 2 Hz. Such performance enables dependable monitoring of lithium battery packs, DC adapters, motor drivers, and mobile robotic power systems. Consistent refresh updates ensure voltage changes remain visible in real time, supporting safer power management and quick troubleshooting during electronics development, battery testing, or portable equipment maintenance.

Bright LED Display with Multiple Color Options

This LED voltage monitoring gauge features a high‑visibility numeric display designed for clear reading in embedded hardware panels and robotics enclosures. Three LED color variants are available to suit different system aesthetics or visual coding requirements: green, blue, and red. Distinct color options allow voltage indicators to match project themes or differentiate multiple power rails inside complex electronic assemblies.

This compact voltage measurement display supports a wide range of practical electronics applications. From battery level indicators in mobile robots and portable devices to embedded DC supply monitoring in DIY electronics and laboratory prototypes, this standalone voltage display module delivers fast, clear voltage feedback with minimal wiring and reliable accuracy.

Electrical Parameters