11Dec'18 Update: Ok the 2 new leak alerts are lasting much longer. Installed them on 30Sep'18 & they're still going strong, but they are on the same floor & closer to the router. Hopefully they will give me a low battery warning. I'll swap one out with the water heater leak alert down 2 floors on the other side of the house to see if it's just a distance issue, and will post another update then. Not getting a low battery warning was not good... although, they do send me a weekly email status, so if one email is missing it will be easier to notice with the 3 alert emails now. Zircon Leak Alert WiFi review, 24Jun2018 Battery died in 2 months, no low battery warning. Poor performance for a device that's suppose to warn you before you home is flooded. 1st and last email dates: Event Date Time Configuration 01-19-2018 07:00 PM Email Success 03-27-2018 12:00 PM They do come with a Panasonic CR123A 3V lithium battery, and 3V rechargeables are available, but not really a very good option to try & recharge every 2 months. I did previously buy 2 other Leak alerts that I'm finally about to setup in different locations around the house so hopefully they'll last longer. I see several others have had the same issue. I'll come back and update this after a few months if the replacement battery & the other 2 last longer. Zircon: Please see if you can add a low battery warning of some type; an email is best, a chirp like smoke alarms is a 2nd option.