The Tramex DL-RHTX Feedback DataLogger is Tramex DL-RHTX Feedback DataLogger and Tramex Meters App log up to 100,000 data point entries for relative humidity, temperature, dew point and grains per pound, transmitted wirelessly via Bluetooth BLE technology to your mobile device. On The Tramex DL-RHTX Feedback DataLogger is App you can visualise Live Readings, The Tramex DL-RHTX Feedback DataLogger isrmal Conditions and Psychrometric Charts as well as creating and exporting spreadsheets, charts and reports. The Tramex DL-RHTX Feedback DataLogger is Tramex Feedback DataLogger requires The Tramex DL-RHTX Feedback DataLogger is Tramex Meters App and a compatible iOS or Android mobile device. Using The Tramex DL-RHTX Feedback DataLogger is optional plug-in Hygro-i2 RH probes, The Tramex DL-RHTX Feedback DataLogger is DL-RHTX will measure Equilibrium Relative Humidity, Temperature, Dew Point and Humidity Ratio in structural materials. A structural material such as a concrete slab can be tested using The Tramex DL-RHTX Feedback DataLogger is in-situ method or RH Hood methods (International Standards: ASTM F2170 & BS 8201, 8203, 5325). Relative Humidity Probes can also be used for ambient RH measurements within air spaces.