About This EASY TO READ: Measures indoor temperature and humidity from -4 to 158°F (-20 to 70°C) and 1-99% RH with large, bold numbers PROFESSIONAL ACCURACY: Provides accuracy of +/- 0.5°F, +/- 2% RH with manual calibration option for data you can trust UP-TO-DATE INFORMATION: Measures conditions every 10 seconds to quickly identify changes in temperature and humidity, as well as displays high / low records for past 24 hours and for all-time ALARM NOTIFICATIONS: Custom, programmable high and low humidity alarms to let you know when humidity levels are outside of your desired ranges, and a colorful humidity level indicator (LOW / OK / HIGH) at the top of the display provides at-a-glance information so you know whether humidity levels are within recommended ranges Overview Color : Black Brand : AcuRite Product Dimensions : 1.25"W x 3.75"H Item Weight : 0.01 Ounces Battery Description : Alkaline
