Features:
It is a temperature measuring devices via USB connection to computer . 
It has two external NTC sensor (It has waterproof function)， and an internal temperature sensor. 
It can accurately measure the temperature of machine equipment and the surrounding environment.
It can operate and charge via USB interface. 
Compliant with Standard HID-USB procotol ， free driver. Supports all operating systems.
We can directly obtain the temperature data through the "CapsLock"， "NumLock" key and the data can be exported to excel， txt and other text files. 
Our software supports all Windows system， all the data are automatically saved as txt or csv format. 
It have email alarm， curve， MSN function and so on. Especially， MSN function enables remote viewing data.
Applicable occasions: To collect the data of temperature or temperature difference of ice locker， water tank， computer room or between the specific two points.

Parameters:
Temperature range:
Internal sensor: -40 ~+120 →
External sensor: -50 ~ +150 →
Probe type: NTC thermistor (10K F3950)
Temperature Resolution: 0.1 →
Temperature accuracy: + / - 1.5 →
External sensor cable length: 1 m
Power supply: USB (5V)
Voltage: +5 V
Current: <10mA
Net weight : 36g

Package Included:
1 * USB Thermometer
1 * CD