Signstek = Uni-T

[testuser1]

Hi,
First I have to say I'm new here so hopefully this is the right Sub to post this.
I've bought this Signstek UT139C Multimeter:
https://www.amazon.de/Signstek-UT139C-Digital-Multimeter-Bedienungsanleitung/dp/B08BZJZQ6P/ref=sr_1_2?__mk_de_DE

It looks exactly the same to the original Uni-T UT139C. I think they are basically the same meter, just rebranded. Does anyone know if this is true or did I indeed buy a fake one (i mean its not really fake because it doesn't say UNI-T at all, but you get the point)?
Also: I've never heard about Signstek but their meter is pretty good for the price. Why aren't they more popular?

[tunk]

Don't think they're exactly the same; the Uni-T is 6000 count and this looks
like it's 20000 count. Open it and post photos - maybe someone can give more
advice.

Edit: Looking a bit closer at the link, the photos show a 20000 count meter,
but the description says 6000, so they could be the same.

[AVGresponding]

The fifth pic shows a 4-digit display, with the sixth pic showing a 4-digit display on the box and the meter out of the box with a 5-digit display!

I'd guess it's a rebranded Uni-T, I've seen a few, TIS is another, off the top of my head.

+1 to the request for internal pics!

[testuser1]

Here are some pictures of the internals:

The circuit seems to be the same, only some components are different. Maybe a non EU-Version of the UNI-T meter?

[Fungus]

I thought many Uni-Ts came in different flavours, denoted by the letter.

The 20000 count ones end with an 'E'. Maybe it's a UT139E or something.

[AVGresponding]

I thought many Uni-Ts came in different flavours, denoted by the letter.

The 20000 count ones end with an 'E'. Maybe it's a UT139E or something.

Look at pic 6. It has both 4 and 5 digits. I suspect overenthusiastic marketing in the listing. In any case, the Uni-T 139E had 4 digits, the same as the 139C.





EDIT: Here's a pic of my Unit-T 139C board, purchased maybe 5 years ago. Note the board number; mine is 190612-4, testuser1's is a 190612-5, so the next revision by the look of it. Mine also has the BOB on the other side of the mainboard. The input protection seems about the same.



Needless to say, I only use mine for low energy stuff; I use a Fluke if I am prodding at something dangerous...

[testuser1]

It's definitely 6000 counts. The pictures on Amazon even show a bar graph which the multimeter doesn't have so I guess the display part in the product photos is edited (the case seems to be real though).

[Fungus]

Look at pic 6.

Obvious photoshop. The display isn't even aligned with the case! 

[testuser1]

Yeah and the multimeter isn't even turned on in this picture so the display should be empty (apart from the missing probes) 

[AVGresponding]

Maybe the 5-digit display is just a picture printed on the screen protector, it would also explain the wonky alignment...