Auto Power Off - Humidity Range: 0-100%RH - Air Temperature Accuracy: +/- 0.5° C @ 25° C - Storage Temperature: 14°F to 140° F, <80% RH * Fast Response Time - Temperature Range: -30° - 100° C / -22° - 199° F - Resolution: 0.01% RH, 0.01° C/F - Dimensions: 8.98-Inch H x 2.17-Inch W x 1.30-Inch D * Dew Point Temperature - Dew Point Temperature: -30° - 100° C / -22° - 199° F - Response Time: %RH: 105 (90% at +25°C still air) - Weight: 6.77 oz * Dual Display Temperature & Humidity - Wet Bulb Temperature: 0°- 80° C / 32° - 176° F - Battery Type: 9V (Included) * Data Hold Function - Humidity Accuracy: +/- 2% RH - Operating Temperature: 32° F to 104° F, <80% RH