In the OP of this thread you would find links to my earlier luxmeter tests, the one from april 2018 included a luxmeter that at least looks very similar to the “Dr Meter” one that you are interested in. But as I have learned with budget chinese luxmeters, you never know for sure what is inside even if the package looks exactly the same . Here is the link once more: 5 luxmeters compared (april 2018)