0.28 Inch 2.5V-30V Mini Digital Voltmeter Voltage Tester Meter

The 0.28 Inch Mini Digital Voltmeter is a small digital voltage tester designed to provide a clear and convenient indication of DC voltage. It can measure voltages between 2.5V and 30V, making it suitable for many low-voltage electronic and electrical systems.

The built-in 0.28-inch LED display provides a direct numerical voltage reading, eliminating the need for an external multimeter during basic voltage monitoring tasks. Its compact dimensions make it suitable for installation in DIY enclosures, control panels, battery-powered devices, and custom electronics projects.

The module has a specified working current of less than 30mA and a measurement error of approximately ±1%.

Features

• Compact mini digital voltmeter design
• Measures DC voltage from 2.5V to 30V
• Clear 0.28-inch LED display
• Low working current of less than 30mA
• Approximate measurement accuracy of ±1%
• Fast measuring rate of ≥200mS/time
• Small 31 × 12 × 9mm form factor
• Suitable for compact electronic installations
• Useful for battery and power supply monitoring

Applications

• DIY electronics projects
• Battery voltage monitoring
• DC power supply monitoring
• Arduino and microcontroller projects
• Robotics projects
• Automotive electronics
• Portable electronic devices
• Control panels
• Power management projects
• Custom electrical enclosures
• Educational electronics projects

How It Works

The mini digital voltmeter measures the DC voltage applied to its measurement input and converts the measured electrical signal into a digital value. The result is displayed on the integrated 0.28-inch LED display.

With a measurement range of 2.5V to 30V DC, the module can be used to monitor many common low-voltage power sources and battery systems. The compact design allows it to be integrated directly into custom projects where continuous voltage indication is required.

Important Notes

• The specified measurement range is DC 2.5V to 30V.
• Do not apply voltage above the specified maximum measurement range.
• The stated ±1% margin of error is approximate and actual accuracy may vary depending on operating conditions.
• Ensure correct polarity and wiring before applying power.
• The display and measurement performance may be affected by supply conditions and electrical noise.
• Dimensions may have slight variation due to manual measurement.
• Product appearance and component arrangement may vary slightly between production batches.

Package Includes

• 1 × 0.28 Inch 2.5V-30V Mini Digital Voltmeter Voltage Tester Meter