Please PLEASE add a item like a speaker that actually works. What i mean is like if you have VC you can use a microphone and place speakers down and when you talk it will go through the whole place. This can be used for airports, schools, stadiums, etc. Another suggestion I have is to add fire alarms. We already have fire alarm SWITCH but no alarm for it. Again it could be used in schools, airports, and stadiums. I really hope you add this