Sutro is a wireless floating water chemistry and temperature monitor designed to allow pool owners to easily, in tech savvy way, virtually hands-free monitor their pool or spa and keep it in prime condition.
Sutro smart chemistry sensor floats in your pool or spa and monitors your water quality. It communicates with your smartphone (either an iPhone or Android) via the cloud, and alerts you when an action is necessary.
homeowner merely tosses a pHin or Sutro device into his/her pool or spa. Then, through a smartphone or desktop app, he or she can easily check the water balance and receive notifications when the water should to be treated — and what it needs. pHin measures pH, ORP, free chlorine, total alkalinity, total hardness, cyanuric acid and temperature. Sutro measures the same parameters as well as UV load.
pHin has partnered with chemical manufacturers to create pre-measured, single-dose, water-soluble pods — containing chlorine (or bromine for hot tubs), shock, pH increaser and pH decreaser — that are shipped to the homeowner in a subscription plan. pHin is not compatible with other chemical brands, so users are required to purchase chemicals through the company.