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The Extech Big Digit Hygro-Thermometers units feature max/min reset function and rear calibration adjustment port. Remote probe clips onto meter or extends via on 18" cable.
Humidity range is 10 to 99% RH with an accuracy of ±4% RH; temperature range is 14 to 140°F (–10 to 60°C) with an accuracy of ±1.8°F/1°C. Measures 37⁄8"W x 45⁄16"H x 3⁄4"D. Weight is 6 oz.
Offers an optional NIST-traceable certificate that satisfies ISO and other regulatory requirements for product accuracy for traceability.
Comes complete with built-in stand, mounting bracket, sensor, and one AAA battery; order optional calibration salt bottles below.