Wifi Sensor Integration

Shelly is about to release a door senor that is able to produce a http push notification. I am thinking about how to integrate this with the k.io board.  I am not sure what pins the nodemcu that comes with the k.io board are used, but I was thinking that I could use another esp8266 and configure a web server on it to accept these push notifications and then trigger a connected NC relay that is wired to the k.io terminal block (zone) to become open. Does that sound like a good approach ? Have I whiteboarded a new product ?

On second thought, if I have no 'wired' sensors, the esp8266 that receives the sensor notifications could be the alarm engine....no slick app on my phone but notification etc.  Hmmmm