This intelligent temperature and humidity data logger is provided with a high-accuracy digital humidity & temperature sensor. It's widely used for the temperature measurement of warehouse management, logistics transportation, communication rooms, shopping malls libraries, etc. Specifications: Color: White / Blue (Optional) Material: ABS Temperature Unit: / Temperature Range: -40～105 / -40～221 Temperature Resolution: 0.1 / 0.1 Temperature Accuracy: 1 / 1 Humidity Range: 0～100% Humidity Resolution: 0.1%RH Humidity Accuracy: 3.0% Heat Index Range: 21.1～54.4 / 70～130 Dew Point Temperature Range: -40～105 / -40～221 Export Format: PDF & Data Storage Capacity: 80,000 Sampling Interval Time: 0.5s Recording Time: 1 second ～ 24 hours(Adjustable) Connect Interface: USB 2.0 Power Supply: 2 * 1.5V AA Battery (Not Included) Operation Temperature: -30～80 (-22～176) Operation Humidity: 0 to 90%RH Storage Temperature: 0～40 / 32～104 Storage Humidity: 0 to 75%RH Item Size: Approx. 55 * 90 * 30mm / 2.2 * 3.5 * 1.2in Item Weight: Approx. 68g / 2.4oz (Without Battery) Package Size: Approx. 15.5 * 11 * 6cm / 6.1 * 4.3 * 2.4in Package Weight: Approx. 129g / 4.6oz Package List: 1 * Temperature and Humidity Data Logger 1 * USB Cable 1 * CD 1 * User Manual(English)