This may be the issue that a lot of people on here are having
the light sensor, temp, air quality, etc
This last part is not trivial, considering that Nest and Dropcam are now charging you to use the product
EDIT July 2016: I was having issues where my Piper was being disconnected every few days, and noticed other devices in my home were having the same issue
Keep in kitchen to see front door, backdoor, family room and garage door entrance
Took place of my 24 hour security system that was costing me $42/month