For the price of the products is absolutely fine. Installation was easy, batteries are already in the process and the equipment really make a harsh noise when they are activated. The probably be ignored in an emergency hardly.
The fire blanket makes a high quality impression.
Well, I also think that in the operating rules of conduct for the real thing contained. Who would have ever thought about an evacuation plan in case of fire? And how should one ever behave when it beeps at night?
In any case, the family now feels more secure and is hoping that the emergency may never occur.