About This MULTI-USE TEMPERATURE AND HUMIDITY DATA LOGGER. Internal high-precision temperature sensor measuring from -20℃ to 60℃(-4℉~140℉). 78.7-inch-long external temperature and humidity sensor probe measuring temperature from -40℃ to 85℃ (-40℉~185℉) and humidity from 1% to 99%RH. LARGE RECORDING CAPACITY. Records up to 100,000 temperature points and 100,000 humidity points, generates PDF report automatically without software. RECHARGEABLE BATTERY. Low-power consumption runs up to 2 years on a full charge. LARGE LCD SCREEN. It will provide audible alarms, LED indicators, and screen indicators when temperature or humidity is over the set range. Display the MIN/MAX temperature and humidity in both screen and report. PLEASE EMAIL/MESSAGE US FOR THE CALIBRATION CERTIFICATE. Free software: conforms to FDA standard, supports macOS and Windows systems, provides a variety of functions for convenient use. 24/7 US Technician Support via Email and Phone. Overview Brand : Elitech Special Feature : Alarm Color : Orange Age Range (Description) : Adult Included Components : Data Logger*10, Calibration Certificate, User Manual Outer Material : Plastic Specification Met : FDA Display Type : LCD Connectivity Technology : Usb Product Care Instructions : Wipe Clean