Mini 3-wire Volt Meter (0 - 99.9VDC)

Mini 3-wire Volt Meter (0 - 99.9VDC) info

You can put a volt meter anywhere using the Mini 3-Wire Volt Meter. This type of mini volt meter is generally used in RC projects to keep track of batteries, but it seems to work perfectly on a breadboard or enclosure. This volt meter has just three wires. Two wires are used to power it and the third wire is used for measurement.

To make measurements with Mini 3-Wire Volt Meter, you just need to

• Connect the red wire to a positive power supply from 4.5 to 28VDC
• Connect the brown or black wire to the common ground to power the display
• Connect the orange or white wire to the line you want to measure the voltage

The microcontroller on the mini volt meter reads the voltage and compares it with a stable reference and shows it with a 0.1V precision on a 3-digit 7-segment display. The measurement range of the volt meter is between 0V and 99,99V so it is suitable for all electronics projects. Mini 3-Wire Volt Meter draws only 3-4 mA to power the microcontroller and the display. Mini Volt Meter has mounting tabs which make it easy to attach to any box or plate.

Mini 3-Wire Volt Meter - General Specifications

• Mini volt meter using only 3 wires
• Measurement range between 0V and 99,99V
• Measurements with 0.1V precision
• 3-digit 7-segment display
• 3-4mA current consumption
• Mounting tabs for easy assembly

Mini 3-Wire Volt Meter - Technical Specifications

Dimensions:

• PCB: 30mm x 20mm
• Mounting Holes Distance: 28mm / 1.1"
• Mounting Holes Diameter: 1.85mm / 0.07"
• Display: 23mm x 14mm
• Combined Depth: 11mm
• Weight: 5.45g

Power Specifications:

• 4.5V to 28V DC power
• 0V to 99.9V DC measurement
• 0.1V precision
• 3-4mA draw
• Green LED display
• For use with positive voltages only

References

Adafruit Product Page: https://www.adafruit.com/products/705