See my post here. If you use Ring Alarm with @codahq 's app and drivers, you can control arming and disarming of the Ring Alarm system, and still use their keypad or app if you want. Their alarm arming, disarming and sounding can also trigger things on HE.
And if that's not what you want and you decide you do want iSmart Alarm, then send me a PM. I have one I'll sell you at a very reasonable price. I modified one of its remotes so it can be controlled by a Z-Wave or Zigbee relays. So for example, if you added a Zooz Multi-Relay, then you can trigger the arm, disarm, and panic buttons, thus allowing you to arm it, disarm it and trigger its siren (I have the remote siren to sell with it too).
Having said that, you do get much better integration with the Ring Alarm and the Unofficial Ring Integration that @codahq wrote. That will let you arm/disarm/panic from the keypad and trigger HE based on what's happening on the Ring Alarm. Whereas my modification to the iSmart Alarm remote will only let you arm/disarm/panic. No feedback to HE with what the iSmart Alarm is doing if it wasn't initiated from HE.
[Edit] Duh, and most importantly to answer your question specifically, the Ring will notify you that a sensor required (if you specify it as required) is bypassed. So since the integration is controlling the Ring Alarm API directly, then arming via an action from HE will act the same as if you had armed it from the keypad or app.
