
This device serves its purpose (shadow measurement on hiking trails) very well. I connected its voltage output to an analog data logger so I can view the time-varying light intensity levels on my laptop. The device works great for several hiking weekends and correctly detects shade/sun conditions. My only issue is that the switches aren't recessed, so the device slipped into my backpack and went into a mode where the data resolution became insufficient for my needs. However, I bought a switch cover to fix this problem.

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