Nice one guys, loving the video series and they are some good points to remember about what could be some red flags about projects. For me also something basic where there isn't a white paper or it isn't complete is something that erks me.
I have picked this post on behalf of the @OurPick project which will be highlighted in the next post! 
that is true!
Photoelectric Smoke Alarms: Photoelectric alarms are more effective at detecting slow-burning, smoldering fires. They work by using a light beam and a sensor. When smoke enters the chamber, it scatters the light, triggering the alarm. our crew