For Bosch Twinguard (sure there will be more) statistics are available only for temperature entities. It would be great if a user could decide to also have statistics for other values as humidity, pressure…
As far as I could research this cannot be enabled by the home assistant user but is fixed defined by the author of the integration. Until there’s no option to have a general long-term/statistics opt-in for every kind of meassures/meters this is subject to the integration (correct me if I’m wrong).
Which integration are you using? The one from HACS?
I do have long term statistics for temperature, humidity and purity. Pressure is not measured on the twin guard as far as I know, the other sensors for the twin guard are not numeric and thus can’t have long term statistics.
I think if you connect them directly through Z2M you get statistics, but not native Bosch-app support etc
Yes, it’s from HACS. Didn’t know there’s another way to include the Twinguard data as Haningback mentioned. I don’t like the HACS’ way because the Bosch system fundamental depends on equal firmware versions (otherwise the controller refuses to speak with the HA integration and the crappy App). Not the best way in a internet-isolated network.
Can you explain what you mean here? If Bosch announces API changes for their REST-Services the necessary changes are done in the library, doesn’t matter if you use the integration from HA or HACS, both have the same author anyway. I can only recall one significant change for the authentication.
Can only tell about the integration from HACS, it does produce statistics for all numeric values from Twinguard ( temperature, humidity, ppm ), no statistics for alphanumeric air quality ratings, it might be wrong, but as far as I know HA only allows long term stats on numeric values with certain units.
Sorry, I was absent for quite a while…
Maybe there’s a version comparison, don’t know. But fact is that the Bosch controller is in a separated network and doesn’t have a direct connection to the internet. So if the Android app updates it cannot speak with the controller anymore, requesting it to be updated, too. This happened quite often until I set the app to [] no updates (force to keep it in sync with the controller firmware). The same I experienced with changes of the HACS integration: broke connection also (but not so often) until giving the controller the chance to update itself (and of cource the app, afterwards).
This all without any need to do so: there are no new features or noticeable changes to the hardware setup I have in use. So all updates I struggled with were for nothing but troubles… 
My hope was to get rid of all “middleware controller” issues by contacting the Twinguards directly by Zigbee or what.
I do not own one but wondering if anyone have tried testing the Bosch Twinguard Smoke/CO2 detector / multi-sensor with Home Assistant’s ZHA inegration (Home Assistant’s built-in native Zigbee gateway component) using this initial Bosch Twinguard 8750001213 quirk (ZHA device handler) from pull request @sarangnemo submitted?
See related Device Support Request and discussion about using the Bosch Twinguard in ZHA here:
FYI, you can find some more instructions here in this community how to test experimental qurks that have not yet been merged:
PS: Note that with the ZHA integration you need to have a moden Zigbee Coordinator radio adapter based on a newer Silicon Labs or Texas Instruments radio chip and Zigbee stack version, like example the official Home Assistant Connect ZBT-1 / SkyConnect, (so it will not work in you have a ConBee/RaspBee or ZiGate based Zigbee Coordinator dongle/stick).