Taylor 9842 Commercial Digital Thermometer by Taylor Precision. Waterproof. Easy Read 4 digit LCD display. 5″ stem. Includes antibacterial storage sleeve. Reads -40 to 450 deg F. NSF listed. Includes 1 yr warranty.
I’ve owned this thermometer since March of 2010. This has regularly gotten soaked and sometimes accidentally submersed. As of July 2017 that original unit is still working great.
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