I was wondering if there is a simple way to create a rule for devices that have not responded in a while? It seems the battery level on smarthing devices are never accurately reported. Mine tend to go offline from 50-65 percent "Battery level remaining". I would like to have the system alert me when it has not heard from a device for a period of time, lets say 8 hours? This way I don't have a sensor offline for a few days before I notice.