This USB thermometer is a measurement device using USB port to connect to a computer or other machines. It uses sensor to measure the temperature of the machine, indoor or outdoor temperature and liquid accurately. It can be used in room, super market, drugstore, farm, greenhouse, products and so on for environment temperature testing. Features: Measures the PC temperature in real time, and measures other things via external sensor External sensor can measures liquid Data is displayed in °F or °C Waterproof and lightweight Measurement data is stored in PC and easily copied into Excel Read data directly on temperature curve diagram Can sent data to presetted email address Automatically record data in log file High speed USB interface Measurement accuracy is up to 0.0001 Alarm function USB interface: compatible with USB 2.0/1.1/1.0 Compatible with Windows 2000 / Xp / Vista / Window 7.0 Measurement range: -40°C ~ +120°C max (-40°F~ + 248°F max) Color: Blue + Black Cable length: Approx. 1 m / 39.4 inch Probe dimensions (L x W x H): Approx. 4.8 x 1.7 x 0.7 cm / 1.9 x 0.7 x 0.3 inch Package Includes: 1 x USB Temperature Sensor Tester Data Log Test Thermometer 1 x CD