This instrument 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: Built-in USB interface, can directly connect with PC. Can measure and record temperature and humidity automatically. Switchable temperature unit of C/F. Wide measuring range: 0~100%RH; -40~70C/-40~158F. Can generate PDF and data graph export format directly. With software DGraph, you can set alarm limits, analyze and download the data. Includes Max/Min values, temperature light alarm, startup delay and current time functions. Data hold of 16384 data(8192 sets); Recording and sampling interval of 1s~24s. Widely used for the temperature measurement of warehouse management, logistics transportation, communication rooms, etc. Specifications: Color: Grey + Blue / Black (Optional) Material: ABS Temperature Unit: C/F Temperature Range: -40~70C/-40~158F Temperature Resolution: 0.1C Temperature Accuracy: -10~70C; 0.5C/0.9F; -40~-10C; 0.8C/1.5F Humidity Range: 0~100% Humidity Resolution: 0.1% Humidity Accuracy: 35%~80%; 3.0%; other 5.0% Export Format: PDF & Data graph Recording/sampling Interval: 1s~24s(adjustable) Connect Interface: USB Power Supply: 1 * CR2032 Battery (Not Included) Item Size: Approx. 7.5 * 4 * 2.5cm / 2.95 * 1.57 * 0.98in Item Weight: Approx. 32g / 1.13oz(Without Battery) Package Size: Approx. 11.6 * 8.8 * 4.4cm / 4.57 * 3.46 * 1.73in Package Weight: Approx. 79g / 2.79oz Package List: 1 * Humidity Temperature Data Logger 2 * Screws 2 * Chocks 2 * Glues 1 * User Manual(English)