The main benefit of this product is that it allows you to control when your traditional gas water heater is on or off, helping you to save money by turning it off when you don't need your water hot, for example when you are sleeping or not at home. But it has some limitations.How it works: Through a com cable that plugs into your traditional water heater thermostat control, this device connects your water heater wirelessly to your phone or computer, so you can turn it off or on when you want, rather than having it running 24/7.PROSYou can automatically prevent your water heater from running when you do not need hot water and get back on when you need it.You can set a timer so that your water heater works on a schedule for every day or the week or specific days and times.You can control this either from your phone or your computer.At any time you can see if your water is hot or not on your phone or Aquanta website, and you can “boost” the water heater if you happen to need hot water outside the schedule you have previously set.It is easy to install, provided that your gas water heater is not too old (check compatibility on their website)CONSI think they should do a better job explaining in plain English what this product does and what it doesn’t, so you don't have to figure it out at the time of use.Poor user manual (if you are like me, who like to understand how things work, you will be emailing them for basic questions not addressed in the manual)The temperature reading is not completely accurate,. Expect a difference of about 5F degrees below the actual water temperature (BTW, remember that the water temperature is controlled only by the water heater thermostat control)No phone customer support. Only email and they may take a few days to answer.There is confusion and problems because there are two versions of that app for Aquanta, plus the website portal, all of which work to some extent and relate to your same account. However only the latest app version is working 100%, at the time of this review is version 2.7.0, the older app and the website can not at this point update your profile and preferences. I hope they fix these discrepancies because it is useful to also have the option of using the website portal from a computer.VERDICTI think it is amazing at what it does, letting your control wirelessly whether or not and when your traditional water heater is on or off. For that reason alone, I think is worth it. If they would fix the discrepancies between their website, their app, and their older app, plus make a better manual, and have better customer support, this product would deserve five stars.