This USB data recorder is a digital recorder taking high-precision digital temperature and humidity module and atmospheric pressure module as sensors. UT330A only can record temperature data.Features:It features IP67 water and dust resistance, high accuracy, great storage capacity. With a plastic case to well protect the USB interface. Automatic storage, USB data transmission, image upper computer management and statistic and so on. Can meet various high-precision measurement and long-time temperature, humidity and atmospheric pressure monitoring and recording requirements. Suitable for medicine, transportation, warehousing and other occasions. indicators: "REC" and "ALM". "REC" light in green to show working condition; "REC" light in red to show battery condition; "ALM" light in yellow to indicate full storage; "ALM' light in red to give a temperature warning. Specification:: UNI-TSize: Approx. 12.3*3cm/4.8*1.1inWeight: Approx. 88g / 3.1ozFunction UT330A UT330C Water& Dust Resistance IP67 IP67 Measurement Range Temperature: -40~80 Temperature: -40~80 Humidity:0-100%RH, non-condensation AtmosphericPressure:750-1100hpa Resolution Temperature: 0.1 Temperature: 0.1 Humidity: 0.1%RH Atmospheric Pressure: 0.1hpa Measurement Accuracy Temperature:-40~-30: 2.0-30~0: 1.00~40: 0.540~70: 1.070~80: 2.0 Temperature:-40~-30: 2.0-30~0: 1.00~40: 0.540~70: 1.070~80: 2.0 Humidity(at 25):3.0%RH (20%~80%RH)5.0%RH (20%RH or 80%RH) AtmosphericPressure (at 25):3hPa Data Storage 0-60000 0-60000 Package List:1 x USB Data Logger1 x Fixed Support2 x Screw.1 x User ManualNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.