This little device measures voltage from a DC source and display the value on a 3-digit 7-segment display. It weighs only around 5g and it's perfect for keeping track on voltage for batteries or solar panels. It has a nice and vivid 3-digit 7-segment display that comes in 4 colour options.
This voltmeter can measure up to 30V - good enough for most electronic projects. This is the 2-wire version of the voltmeter. It measures the voltage that powers it. To use, simply connect the red wire to positive voltage and black wire to the ground. Reverse voltage protection is built-in, so you do not have to worry if you connect the wires wrongly. We also have the 3-wire version with the third wire used for measurement.
There are two mounting tabs on the sides that make this module easy to attach.
Technical details:
Display: 3-digit 7-segment LED display
Operating range:
Red: 2.5V-30V
Blue: 3.0V - 30V
Yellow: 2.5V - 30V
Green: 2.7V - 30V
Precision:
0.1V for measurement between 10.0V-30.0V
0.01V for measurement between 2.50V-9.99V
Dimension: 24 x 15 mm (excluding mounting tabs), 10mm thickness
