Thanks all for the advice. Yes, the intent wasn't to have it directly into the 
sun, but to have a short shade/tube on it to prevent such. With that taken care 
of, my concern would be for ambient sunlight, reflection, or even modulation of 
a reflection from leaves or passing vehicles. Is that something to worry about, 
or can it be tackled with something like a preset 'header' pattern in the 
transmission or a check bit or two?

-Skip


> These sensors already have a black IR-pass filter as the case material - the sun has plenty of NIR
> content so filtering won't help much  - the only solution is to shade the sensor so direct sunlght
> doesn't hit it. 
>   
> 
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