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. Features: Simultaneously measure and automatically record temperature and humidity. Wide measuring range: 0～100%RH, -40～105℃/-40～221℉ with ℃/℉ temperature units for selection. Can generate PDF and data export format directly. With a USB interface, can directly connect with PC. With software DGraph, you can set LED alarm limits, analyze and download the data. With dew point, heat index, Max/Min values, data hold, low battery indicator and backlight functions. When the data exceeds the setting limits, it will give an LED light alarm. Data logging of 80,000 data and download data via software. Recording and sampling interval of 0.5s. Widely used for the temperature measurement of warehouse management, logistics transportation, communication rooms, 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)