This intelligent temperature and humidity data logger comes with a high-precision digital humidity and temperature sensor. It is widely used for temperature measurement in warehouses, logistics transportation, communication rooms, shopping center libraries, etc. Features: Simultaneously measure and automatically record temperature and humidity. Wide measuring range: 0100% RH, -40105/-40221 with temperature units/for selection. Can directly generate PDF and data export format. With a USB interface, can connect with PC directly. With DGraph software you can set LED alarm limits, analyze and download the data. With dew point, heat index, Max / Min values, data retention, low battery indicator and backlight functions. When the data exceeds the setting limits, an LED light alarm is issued. Data logging of 80,000 data and data upload via software. Recording and sampling interval of 0.5s. Widely used for temperature measurement in warehouse management, logistics transportation, communication rooms, etc. Features: Color: White / Blue (Optional) Material: ABS Temperature unit: / Temperature range: -40105 / -40221Temperature resolution: 0.1/0.1Temperature accuracy: 1 / 1 Humidity range: 0100% Humidity Resolution: 0.1% RH Humidity accuracy: 3.0% Heat index range: 21.154.4/70130Dew point temperature range: -40 105 / -40 221 Export format: PDF and data Storage capacity: 80,000 Sampling interval time: 0.5s Recording duration: 1 second 24 hours (adjustable) Connection interface: USB 2.0 Power supply: 2 * 1.5V AA Battery (not included) Operating temperature: -30 80 (-22176) Operating humidity: 0 to 90% RH Storage temperature: 040/32104Storage humidity: 0-75% RH Item Size: Approx. 55 * 90 * 30mm / 2.2 * 3.5 * 1.2in Item Weight: Approx. 68g / 2.4 oz (without battery) Package size: approx. 15.5 * 11 * 6cm / 6.1 * 4.3 * 2.4in Package Weight: Approx. 129g / 4.6oz