To hell with Internet of Things… Why would you want a public toilet connect to internet?
Because the administrator can track it if everything is working correctly, while the unit itself provides notifications for which attention is needed such as the failure of the current, the run out of SOAP, failure of the heating in winter or just leave because someone is too long.
The latter might be because someone has become unwell or are looking for a temporary home. All that with only one thought: a consistently high quality. Because no one likes a dirty toilet.