Requires AROYA AROYA GO bundle or AROYA Core with an included software license is a requirement for using and purchasing this product. WHAT'S INCLUDED TEROS ONE sensor With wireless nose WHAT YOU'LL GET Remarkably precise substrate electrical conductivity measurements: AROYA's patented new sensor technology produces data 10x more precise than other sensor designs, even in high-salinity environments. Dial in your nutrient levels with no hesitation. Water content and volumetric water content measurements: Master irrigation, maximize growth, minimize nutrient leaching - and replicate it perfectly every grow cycle. Substrate temperature measurements: Ensure the right levels of moisture intake, nutrient absorption, and growth by managing ideal root zone temperatures. Continuous, reliable data: TEROS sensors take readings and sync them to the AROYA platform every three minutes, 24/7, to give you a clear and complete picture. Less cost, more capability: After millions of dollars in R&D investment and seven years of testing, we've done it: Created a new TEROS that's better than its predecessor and still costs less. Win-win. Win. Built for AROYA: Connects seamlessly to AROYA software for both AROYA GO and AROYA CORE users. Syncs data automatically and reliably. Rugged, long lasting design: Built with resilient epoxy fill, corrosion-resistant stainless steel needles, and tough, securely-attached cables to last years of cultivation. Easy installation for perfectly consistent data: Sharp stainless steel needles slide easily into any growing medium. Stress-free substrate-specific calibration: We did the complicated stuff already. Simply select your grow media in the AROYA app and TEROS will automatically calibrate itself to give the most precise readings. Space-saving hardware design: We packed more capability into fewer sensor needles to make TEROS ONE smaller than previous versions, but even more powerful. Limited sensor variability: The included sensor alignment tool ensures reliable and repeatable data from plant to plant and season to season.