Hammer2010 stainless steel temperature and humidity data logger for harsh enviroment: The Hammer2010 temperature data logger is a rugged, submersible, battery powered, stand alone device which can be used to automatically record temperatures between –40 and 85°C,humudity 0%RH to 100%RH. This all in one compact, portable, easy to use device is able to measure and record data for up to 320000 temperature&humidity measurements. The Hammer2010 features a rigid external probe and is ideal for use in harsh environments. Its real time clock ensures that all the data is time and date stamped. The storage medium is non-volatile solid state memory, providing maximum data security even if the battery becomes discharged. The device can be started and stopped directly from your computer and its small size allows it to fit almost anywhere. The Hammer2010 makes data retrieval quick and easy. Simply plug the device into PC and our user-friendly software does the rest. Probe Sensor: PT100/NTC Temperature Range: -40℃ to +85°C Temperature Resolution: 0.05°C(-40℃ to +60℃),1℃ for the rest. Temperature Calibrated Accuracy:±0.5°C Humidity Range: -40℃ to +85°C Humidity Resolution: ±3%RH Humidity Calibrated Accuracy:±3%RH Memory 15000/30000/180000/320000 selectable Reading Rate: 2 seconds up to 24 hours selectable Battery Life: 1 year Material: 316L stainless steel Dimensions Body: 156mm x 30mm dia. Probe: (34mm x 15mm dia.) Submersible:Yes,IP68 Storage Environment:-60°C to +150°C, 0~100%RH Approvals:FCC,CE business#zoglab.cn (please change # to @)