This data logger is mainly used for temperature recording during storage and ocean or air or highway transportation of foodstuff, medicine, chemicals and other products, especially widely used in all kinds of warehousing, logistics and cold chain, such as refrigetated containers, refrigerated trucks refrigerated package, cold storage, laboratory, etc. or in large-sized global supply chain businesses. This mini Temperature Data Logger has wide measuring range 30 Celsius -and70 Celsius, high accuracy, adjustable record intervals and long battery life for convenient and reliable temperature data recording, monitoring and analysis. It has a large permanent data memory of 32000 points and comes with data management software for easy data download to computers through USB interface. With the software, you could analyze data in form of tables and graphs and export in picture format. The data could be queried, saved, printed and exported in Word or Excel or or PDF format. Wide measuring range,high accuracy and large permanent data memory. Data management software included for working with PC easily Data can be downloaded,analyzed,exported and printed conveniently Over Temperature Alarm and Upper or Lower Limits can be set MAX or MIN values available Temperature measuring range: -30 Celsius -and70 Celsius Resolution: 0.1 Celsius Accuracy: 0.5 Celsius (-20 Celsius -and40 Celsius) others, and1 Celsius Temperature unit: Celsius or Fahrenheit optional Record capacity: 32000 points (MAX) Record interval: 10s-24hour adjustable Sensor: Internal NTC thermal resistor Communication interface: USB interface Waterproof grade is IP67 Power supply: CR2032 battery or power supply via USB interface, and it could upload data even if the battery is out of use. Battery life: in normal temperature, if the record interval sets as 15 minutes, it could be used above one year. Item Size: . 80 (L) x 34 (W) x 14 (H) mm Item Weight: approx. 30 g Material: Plastic Package Contents: 1 x Data Logger 1 x CR2032 battery (Installed inside) 1 x Software installation CD Note:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3 cm.