VooGenzek 2 PCS 0.28" LED Voltmeter Ammeter, Red and Blue Detector Voltage Current Meter Panel Amp Volt Gauge, DC 0-100V 10A for 12V / 24V Multimeter Amperage Meter Volt Amp Gauge Panel

Displays amps and volts from my small scale solar array. Been working ok for12months so far.

Buy it good

There are no instructions beyond the Amazon page. Thin red and black wire are the meter power. 5V is best, as higher will make the on-board regulator hot. Then the yellow wire measures the voltage maybe up to 99.9V. The Voltage decimal point doesn't move for less than 1V or at all. The current meter is actually a 1V approximately max voltmeter for 50.0 A on display. Thus the shut drops 0.2V at 10A, which is 2W. I expect the shunt, which is a surface mount resistor gets a bit two hot at 10A. Being experienced at electonics I removed the shunt. Then suitable external resistor can be used, A 20 ohm shunt will thus measure 0 to 50 mA, with the decimal point shifting one to the left for less than 1.0 on the display (was 1A, now 1mA), thus 0.99 down to 0.01. I'd not use the built in shunt for more than 2.5A. The adjusters are to calibrate voltage and current.

Worked as expected. The shunt bar is close to 1.5 milliohms, making it useful for other projects.

I use 2 off these to measure voltage and current and these match my DVM readings. Fitting in a cut out hole works best if you first take the unit out of the bezel. Then fit the bezel, then put the unit back in the bezel. Else the unit blocks the locking pushy things and you may break something. With before procedure it locks very easily in the cut hole.

Series shunt resistance much bigger than competitor versions so useless for higher currents. Unable to calibrate V and A independently. Waste of money

Superb performance

Used to monitor the output of two solar panels. Worked well. Not to confident the connector would last long at 10A, so soldered wires to the pins. Accuracy was a little off, but for indicators to give an idea of whats going on, they are accurate enough. No instructions with the item, so remember to print out the diagram in the listing for future reference.

fungerar bra

l'ampèremètre donne une bonne indication de la consommation de courant dès 100mA, le voltmètre est plus précis (+6%) ce qui donne un très bon produit. De plus j'avais déjà utilisé ce produit, il y a quelques année, toujours opérationnel, il s'avère très fiable dans le temps et j'en suis très satisfait.

Ho montato questo strumento su un alimentatore switching da 50A e funziona benissimo, devo verificare bene la precisione, per il momento ok.

Würde ich sofort wieder kaufen!

Ottimo, tutto come da descrizione ! Non fanno misure professionali ma sono di ottimo impatto su un vecchio alimentatore