Our Hydrologger device is ready for your greenhouse. It measures all essential metrics like pH, TDS, ORP, Water Temperatur, Air Temparature and even humidity. It helps you keep track of your system without manual measurements. Additionally Hydrologger can activate pumps and other devices automatically on a scheduled basis for you. Hydrologger supports both Wifi as well as Ethernet. Hydrologger comes with a independent app, which lets you see all your readings even without internet connectivity.