Hi. All my water leak sensors (5 of them) stopped working at the same time and control 2 for all of them is not staying in "run then" config. I tried all of the above (change batteries, delete and add back, hard reset). Nothing seems to do it, they do not report any wet condition any more (some are in the basement, main floor and 2nd floor. They have been working for a few years now and suddenly, none are working. I fall short of any solution. Anyone could help, please.