MIMOlite should work well. I use it to get doorbell notifications and I have my Ubi say “Ding Dong” when someone rings. It’s pretty funny. I think it comes with a tiny manual to help explain wiring. Simple to setup. You can see some of the wiring layout in this thread.
After I became more comfortable with groovy I never did go back and clean up the septic monitoring and alerting smartapp code I posted in this thread. It’s all still working and alerting as it should with the smartsense multi sensor.