Question about Fibaro smoke sensor

Yes, that's exactly how this device is designed. If a smart home system with ZigBee connection is available, then the alarm would also be forwarded to this and you can, for example, be alerted on your mobile - but this would then be a functionality of the smart home system...

Yes, I can set this with homey. But my question was: Can the Fibaro device also connect to the other Fibaro devices on its own, i.e. without a smart home device? If the homey control centre stops working because of a fire, that would be interesting. In addition, it is always a good idea to have as few intelligent devices involved as possible in critical cases - such as a fire in the house.