Re: Extech EX410A DVM Don't Buy

On a sunny day (Fri, 04 Oct 2024 16:07:24 -0700) it happened Jeff Liebermann
<jeffl@cruzio.com> wrote in <7so0gjtispsfqvv9klhq9vlsgfpqd1vs2m@4ax.com>:

On Thu, 03 Oct 2024 14:46:46 -0700, john larkin <jl@glen--canyon.com>
wrote:
>

Extech EX410A  DVM  Don't Buy
>
The auto power off is incredibly stupid. I'm going to throw mine away
and get something usable.

>
What don't you like about the auto power off feature in the EX410A?
>
EX410:
<https://www.flir.com/products/ex410a/>
>
I have two Extech EX470 DMM's:
<https://www.flir.com/products/ex470a>
Presumably, the auto power off function is similar.
>
I've had both DMM's for over 10 years and use them often.  I've had no
difficulties except with various 9V batteries.  I got tired of
replacing them.  Over the last 5 or so years, I've experimented with
two types of rechargeable Li-Ion 9V batteries. 
>
The ones without an internal battery charger had self-discharge
problems:
<https://www.ebay.com/itm/304501384792>
They work, but I wouldn't recommend them.
>
The batteries I'm using now, which have a built in charger, are
better:
<https://www.ebay.com/itm/386563315011>

Interesting, did not know that existed.

OTOH my multimeter lasts years on a 9V battery from the supermarket here..
meter switches off automatically, but I switch it of by hand almost always.
means it is never left on for more than 24 hours..
 https://panteltje.nl/pub/chinese_multimeter_img_3159.jpg

I use this too sometimes:
 https://www.conrad.nl/nl/p/voltcraft-vc-320-stroomtang-digitaal-cat-ii-600-v-cat-iii-300-v-weergave-counts-2000-1307543.html

Have a Voltcraft soldering station too, now for > 20 years, is OK.
 https://panteltje.nl/pub/soldering_iron_LCD_display_IMG_5456.JPG
never a problem...