Temperature data logger adopts sensitive thermistor to to detect and record the temperature data, which is mainly used for food, medicines and chemicals in the storage and transportation process. It also Features LCD display, large capacity, auto upload, mini size and IP67 waterproof for convenient use. Features: Data logger: +/-0.5 celsius high accuracy, -30 celsius ~70 celsius wide temperature measuring range, large logging capacity of 32000 temperature readings, 10S-24H settable logging interval. LCD display clearly shows temperature reading and electricity level. With 2 comfortable buttons for easy operation. IP67 waterproof level meets daily needs. Easy to use: long press the power key for over 4s, when the screen displays a rightward triangle symbol, it means the logger has started recording data. Upload data automatically after USB connection to computer. Format selectable: word/ excel/ txt/ pdf. Mini size, lightweight and portable to carry. Temperature changes are measured and recorded by built-in NTC thermistor. Mainly used to detect and record the temperature data of food, medicines and chemicals in the storage and transportation process. Note: Size and color may be slightly different due to manual measurement and different light conditons, please in kind prevail. Thanks for understanding. Specifications: Color: White & Blue Shell Material: Plastic Battery: 3V 240mAh CR2032 Temperature Measuring Range: -30 celsius ~70 celsius Accuracy: +/-0.5 celsius in the range of -20 celsius ~40 celsius , +/-1 celsius in other range Logging Capacity: 32000 Temperature Readings Logging Interval: 10S-24H, Settable Resolution: 0.1 celsius Sensor: Built-in NTC Thermistor Data Output: USB interface, connect to computer Waterproof Level: IP67 Item Size: 80 * 25 * 12mm / 3.1 * 1.0 * 0.5in Item Weight: 50g / 1.8oz Package Size: 10.3 * 6.2 * 2cm / 4.1 * 2.4 * 0.8in Package Weight: 70g / 2.5oz Package List: 1 * Temperature Data Logger 1 * User Manual (English)