DX  » Community » Reviews » Intelligent Car DIY 3-Digit Display Digital Voltmeter Module (3.2-30V)
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  • Overall Rating: 4
  • Price: 4
  • Quality: 3
  • Ease Of Use: 5
  • Usefulness: 4
Cheap device, but a little unprecise in the low end – Intelligent Car DIY 3-Digit Display Digital Voltmeter Module (3.2-30V) Reviews

posted by walker12 on 01/13/2013 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

Pros:
Cheap and easy to use meter. Connect and read! Nearly constant current consumption over voltage, only depending on the number of LED display elements active.
Cons:
Precision a bit poor in low and mid-range. Shows 0.1 to 0.2 V too low up to about 15V. Relative error below 1.5% in the 12V battery range, however. (11-15V)
Other:
The received device seems better suited for a 24V system that my 12V. Plots of absolute error and current consumption have been uploaded.
Bottomline:
OK device, if you can live with the low and mid-range measurement error.

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