Place all six sensors in a constant temperature 30.6°F terrarium. Checked with a heat gun and the terrarium reached the correct temperature of 88.6 F. So for the price, they're definitely worth it compared to some companies' $11.99 yellow. We check everything several times a day with a thermal gun and so far the last two weeks have been read correctly. So we order more. This is my first 5 star review of the many reviews on Revain.RGM Exotics.
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