705~ Datasheet by Adafruit Industries LLC

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TOOLS / TEST EQUIPMENT
Mini 3-wire Volt Meter (0 - 99.9VDC)
PRODUCT ID: 705
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Description
Put a voltage meter anywhere with this very handy display. These are often used by RC
hobbyists for keeping track of batteries but we thought it would be great on a breadboard
or enclosure. This is the 3-wire version of the volt meter, two wires are used to power it
and the third wire is used for measurement. We also have a 2-wire version that measure it's own
power supply.
Simply connect the red wire to a positive power supply from 4.5 to 28VDC, and brown or
black to the common ground to power the display. Finally, connect the orange or white
wire to whatever you want to measure the voltage of. The display has a microcontroller
that will read the voltage, compare it to a stable reference and display the voltage with
0.1V precision on a 3-digit 7-segment display. it can read from 0V to 99.9VDC so it will
be good for any electronic project! The meter draws 3-4mA to power the microcontroller
and display. This particular LED display is a nice vivid green, which we found very
readable. Mounting tabs make this module easy to attach to any box or plate.
Technical Details
Dimensions:
o PCB: 30mm x 20mm
o Mounting Holes Distance: 28mm / 1.1"
o Mounting Holes Diameter: 1.85mm / 0.07"
o Display: 23mm x 14mm
o Combined Depth: 11mm
o Weight: 5.45g
Power specifications:
o 4.5V to 28V DC power
o 0V to 99.9V DC measurement
o 0.1V precision
o 3-4mA draw
o Green LED display
o For use with positive voltages only!

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