All Kestrel meters are backed up by a manufacture 5 year warranty. For information on the manufacture's warranty, please see their site at http://nkhome.com/kestrel/warranty/. If you have any issues Extreme Weather Meters will be glad to assist with any warranty issues. We are able to make that statement since in 10 years of service and thousands of meters sold, we have had less than .05% with an issue.
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If you have any questions, please email support@extremeweathermeters.com.