I’ve put the extender on my second floor (the Aeotec hub is on the ground floor), because of the devices on the second floor and the attic. First of all I see that all my smoke detectors are going through the extender even those on the ground floor. Also my humidity sensor on the ground floor that is 4 meter from the hub uses the extender on the second floor.
The extender often goes offline (no idea why) and then some off the devices that use the extender also go offline. Why do all these devices use the extender, even when they are near the hub?