Anybody used this irradiance meter?

$59, talks to your phone over BT for readout, runs on two AAA batteries.
The reviews on Amazon are clearly fake (English, German, Spanish, Italian entries are basically the same text).
One could use this to compare your irradiance to your panel production and see how close to spec they are.
Just curious.
Mike C.

$59, talks to your phone over BT for readout, runs on two AAA batteries.
The reviews on Amazon are clearly fake (English, German, Spanish, Italian entries are basically the same text).
One could use this to compare your irradiance to your panel production and see how close to spec they are.
Just curious.
Mike C.