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Mini Panel Meter, 3 Wire, 100VDC

Mini Panel Meter, 3 Wire, 100VDC

32321-large.jpg  32321-1.jpg  360-3D.jpg    California Proposition 65 Warning
Stock No: 32321 ME
 Review Average:  
 Number of Reviews: 4
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 Detailed Description
Requires a separate Power Supply
3 digit LED panel Voltmeter
For + Voltage only;
Note: Power & Input Share the Common Black lead
Black Wire: Power Supply - & Input -
Red Wire: Power Supply + 3 to 30VDC
White Wire: + Input
Supply Voltage: 2.5-30VDC
Metering Input Range: 0-100VDC (99.9V)
Resolution: .1V
Character Height: .28"
2 screw mounting.
Cutout: 22.5 X 10.5mm
6in. leads
W: 33mm O/A H: 11mm D: 9mm WT: .012

California Proposition 65 Warning WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

 Product ReviewsClick here to review this item
Display Voltage Change
I changed the 100v input. In one corner there is a chip resistor marked 334. I placed a 220K resistor across it and changed the display so that 5V input = 10.0V readout. Other values = other display readouts. Initially used potentiometer to find desired readout vs input. No attempt was made to change the decimal but it could be blocked with a dab of black paint. Solder carefully!!!
- Woody, VA
Contrast Enhancement
Use of a red filter red gel filter in front of the display will suppress unlit segments. Greatly enhanced contrast! Google red gel filter.
- Woody, VA
Which resistor to short out?
I see a 330k, a 2.2k, and a 12k. Which one should be shorted to change the range to 0.00 - 9.99v?
Mike Huddleston
Versatile, easy to use
I bought a bunch of these because of the three-wire configuration; I wanted to measure voltages other than the supply, which shared a common ground. Theyre very compact; only the mounting tabs stick out beyond the area of the display itself. Theyre very easy to use, of course, and also easy to mount. I wanted a somewhat dressier look, so I 3D-printed bezels to allow them to mount neatly through a rectangular hole in the sheet metal panel with no exposed hardware. Unlike other units of this type, the LED segments in these are surrounded by a black background, so no extra smoked lens in necessary for good contrast in bright lighting. I also modified some of the units to display 0 to .999 volts, rather than the 0 to 99.9 volts theyre designed for. This was very easy, requiring only that a single surface-mount resistor be replaced with a wire jumper, and also had the side effect of increasing the range on the on-board calibration trimmer. These are great little units, especially at the price. I have taken to scattering them throughout projects Im working on, so I can monitor voltages at various points in real time during development.
- Mark Moulding, CA

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