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Fully agree with you Gary, the larger the Peltier the better, if we can fit it. We are probably limited to about 30W max power due to 12V input with <3A max current due to our connector.
By the way, QHY8L (same sensor) uses 3.6W-30W, i.e. about 4A of current at max cooling. Advertised delta T is -35 degrees and it has a single stage Peltier.
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