Kaiweets KM601S and KM602 question.

[Hvacr3ch]

Hi everyone I am new to the blog.   I actually just bought 4 different Kaiweets products think they are amazing.  I also have UEI the new one DL599, Ideal 61-757 Fluke 87V (2) Klein CL800. All of them work great.   I am amazed at the 4 newer Kaiweets models I bought the KC602, HT208D, KM601S and KM602, last two have lithium batteries.  The HT208D has been out for a while as we all know.

The Kaiweets tech support team sent me a video on how to change temperature unit default and also modify  temperature offset since my HT208D was a couple degrees off. 

Does anyone know how to get into that same mode on the KM602S and KM601?  I already tried a series of buttons to press while powering it up without any luck.  Since it’s Chinese holiday, they won’t be back until October 7. I was just wondering if anybody had any clue on how to get into maybe it’s called service mode?