Light Meters in tent

Curious what light meters/sensors folk here use ? I’d like one that displays umol as a unit -TIA

I use an Apogee SQ-520

I went with the free app Photone on my iPhone…pay to unlock the light mode you need …this seems to work ok at this time…but an actual meter like @MidwestGuy mentions would be the best option if you can afford it

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Apogee mq100 is affordable and works well

@MidwestGuy @anon72256435 @JJ520 Dont you just love how Bruce is modeling all his own stuff!?