Can the EM show an on/off button at the room level of the app, like the Shelly 1, etc? I ask as I have used the EM to control some external lighting, with a contactor. I want my client to be able to easily turn the lights on and off from her phone, from the same screen as other 'basic' Shellys, without needing to tap on the EM, then press the button. The default behaviour is that 'basic' Shelly relays show an on/off button, but the EM shows the power consumption, and another tap is required to get to the button. I hope this makes sense.
I used the EM, as the load is quite heavy, with a big switch on current surge. A contactor is much better suited to a long life doing this, rather than the little relay inside a Shelly. But, I wanted power monitoring. In this configuration, a standard PM unit would show only the contactor coil load.