The Bluelab Guardian Monitor Connect In-Line is not only a constant indicator of the desired levels of pH, conductivity and temperature of your nutrient solution, it also data logs these critical parameters to your computer for you. It does not stop there. You can access the data via the cloud from a remote mobile device or computer to check for extreme variances to ensure these critical parameters are hitting the mark for crop success. For remote or cloud access, the computer you are already data logging to will need permanent internet access. It includes simple 1 button calibration for pH 7 and pH 4, personalized alarm settings, high-pressure in-line pH probe with 3/4 ft NPT thread, adapter collar to increase pH probe thread to 1 ft NPT and conductivity probe with 1 ft NPT thread.