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: Brand: UNI-T Size: Approx. 12.3*3cm/4.8*1.1in Weight: Approx. 88g / 3.1oz Function UT330A UT330C Water & Dust Resistance IP67 IP67 Measurement Range Temperature: -40~80℃ Temperature: -40~80℃ Humidity: 0-100%RH, non-condensation Atmospheric Pressure: 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℃: ±1.0℃ 0~40℃: ±0.5℃ 40~70℃: ±1.0℃ 70~80℃: ±2.0℃ Temperature: -40~-30℃: ±2.0℃ -30~0℃: ±1.0℃ 0~40℃: ±0.5℃ 40~70℃: ±1.0℃ 70~80℃: ±2.0℃ Humidity (at 25℃): ±3.0%RH (20%~80%RH) ±5.0%RH (＜20%RH or ＞80%RH) Atmospheric Pressure (at 25℃): ±3hPa Data Storage 0-60000 0-60000 Package List: 1 x USB Data Logger 1 x Fixed Support 2 x Screw .1 x User Manual Note: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.