1 . Replace the batteries.We recommend Energizer Lithium Ultimate batteries like the following:


Lithium batteries have a wide temperature operating range. They operate between -40 degF and 140 degF. Alkaline batteries only operate to about +10 degF.

Rechargeable batteries often have a limited life and mean constant replacing, as well as a narrow temperature range.

If the problem persists, the sensor array needs replacing. We have a one year warranty. Please visit:


If out of warranty, the sensor array can be replaced here:


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