well i did measure 230V and even 400V in some wall sockets before, and pretty sure i did have it plugged in com the normal "20A" socket. I do not think there are special slots for the leads for AC volts.
The good one is owon ow18E
pretty sure it was connected to com and 20A and than sparks
It is possible that the times i did measure the 400V and 230V I did use different meters, well it is very probable. Now I'm very confus.
I did tried the com + V but that was ... too late
I guess maybe just the probes might have burned out.
Other meter is this one
https://shop.fkt.cz/digitalni-multimetr-fk8550-ean7120272-skupsf0000000005.php - here I would guess that I used the "V", but at the moment I was very confused about how everything is behaving, so I'm not sure.
This one does have backlight toggle, no timeouts, etc. As interesting quirk.
I usually use owon and have leads in "20A" and COM "holes" (ports?) and it does continuity and voltage etc. for DC in that setup, maybe I should use the other hole for that and that 20a is for current measurement, really, but until now it always worked ....
Also I'm still very confused, how 230v LED "bulb" can turn on when it is only connected to N and L1 lead, but the N leads is never ever connected to anywhere final, like PE, just to the air. Well it does turn on for a bit and then dies. But still, i measured, between N and L1, hopefully correctly that time about 0,8V, so how can it light up?