Black colored batches no longer working

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Patrick Kim

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Jun 15, 2026, 3:58:01 PM (8 days ago) Jun 15

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Hi,

This is Patrick.

I have sensors not working at the moment, mostly from last year's purchase. Can you please send return instruction with physical address, not POT address? To add a note, new batches with black color have significant failure rate compared to old batch with white color.

Thank you.