Product details:

Extech 445814 Big Digit Indoor/Outdoor Hygro-Thermometer Humidity Alert with Dew Point, %RH Audible and Visual Alarm Alerts When Humidity Exceeds Set Limit, Max/Min with Reset Function This Humidity Alert Hygro-Thermometer has a programmable %RH audible and visual alarm that alerts you when humidity exceeds the set limit. Large LCD simultaneously displays Temperature, Humidity and Dew Point. Product measures Humidity from 10 to 99% and Temperature from 14 to 140F (-10 to 60C). The meter has a basic accuracy of 4%RH and 1.8F/1C. Rear calibration pot for Humidity and Temperature. Featuring maximum/minimum with reset functions that store and recall the highest and lowest readings recorded. Key Features Large, easy-to-read triple LCD displays % Relative Humidity, Temperature and Dew Point %RH audible and visual alarm alerts when humidity exceeds set limit Max/Min with reset function Complete with built-in stand, wall mount bracket, and 2 AAA batteries Specifications Humidity: 10 to 99%RH Temperature: 14 to 140F (-10 to 60C) Basic Accuracy: 4%RH; 1.8F, 1C Dimensions: 4.3" x 3.9" x 0.78" (109 x 99 x 20mm) Weight: 6oz (169g)