Pretty much everything that @erktrek said. Especially the probe. For instance, I use one (a dome) with my water softener. I put the probe on top and as the salt is used, it eventually hits the brine and alarms to my phone twice a day to notify me salt needs added. Add salt, lay now dry probe on top, rinse and repeat. Battery life may be better, I'm not sure.
Download the Hubitat app
