You got the wrong thread since this thread is about their thermostat and not their smoke alarm, do search for other threads.
Regardless, neither of them are support out-of-the-box as of yet today so you need to find, download and install a specific custom device handler (a.k.a. a ”quirk”), see → Zigbee Guide: How-to add/setup local custom ZHA Device Handlers (also known as ”quirks”) in the ZHA integration
Yes it does, (see the limitation section in the ZHA documentation which state that).