Meter (how can i wire it)

[hobbyguy]

Hello I have a quick question on how do i wire this Voltage meter? Has just one of each color cables Red, Black, Yellow, White and Green.
I have the same one as the link but just can figure it out on how to wire and where the voltage goes.
Well thank you.

12V 20V 20A DC LED DIGITAL SOLAR PANEL CURRENT AMP METER AMMETER, voordeel-toko

 

[rjenkinsgb]

I cannot find any other place selling that exact unit, and the place you link to gives no detail at all.

As an educated guess:
Most likely, the red and black are the power supply.
If you have a multimeter, see if there is continuity between black and green, or another wire?

Green may be input common (connected to black) and one of the others the voltage input?

It also has an input to allow connection with a current shunt, for the ammeter display. (That at least is mentioned in the listing). It cannot "read" current without the separate shunt.

You could try briefly connecting the red & black to a 9V battery, to see if it powers up?
Make sure the polarity is correct. And if you try that, it is at your own risk; I am only guessing!!

 

[rjenkinsgb]

I suspect it's likely similar to the diagram on page four of this, but not the same wire colours..

https://electroson.com/documentos/D_MD9059_0_MD9059%20DISPLAY%20LED_DOCUMENTACI%C3%93N.pdf

 

[Externet]

I would return the item to the vendor stating the reason that no connection instructions provided nor published in their site; and buy somewhere else. Vendor probably inherited the nasty chinese habit of not spending $0.0001 in a piece of paper, but multiplied the sales price by 10.

----> https://www.aliexpress.us/item/3256...vid=202303040706154911455214893570015959935_5

 

[crutschow]

how do i wire this Voltage meter?

That's an ammeter.
Did you want a voltmeter?

 

[rjenkinsgb]

That's an ammeter.

It is a combined, switchable, voltmeter and ammeter. The button on the bezel (presumably) switches between the two displays.