Sinoff Device IP Finder
Sonoff Smart Switch Discoverer. The tool will discover what IP is being by a switch for a particular Devoce ID.
Get at site below on GooglePlay
https://play.google.com/store/apps/details?id=com.progwhiz.ipfinder
The website with all the Tools and documentation is at :
https://www.progwhiz.com/portal_lock.html
ip address