The DL-F2170-K is a compact kit designed for professionals who depend on accurate, reliable live & logged readings of relative humidity, temperature, dew point and humidity ratio. Monitor both ambient and in-situ conditions in buildings and building materials. The kit includes 1 reusable Tramex Hygro-i2 RH probe and accesories for testing RH in concrete as per ASTM F2170. The Tramex Feedback DataLogger and Tramex Meters App log up to 100,000 data point entries, transmitted wirelessly via Bluetooth BLE technology to your mobile device. On the App you can visualize Live Readings, Thermal Conditions and Psychrometric Charts, as well as creating and exporting spreadsheets, charts and reports. The Tramex Feedback DataLogger requires the Tramex Meters App and a compatible iOS or Android mobile device. The kit comes in a protective Tramex Easy-travel case.