Only the parent unit has an integrated battery. See technical data on the manufacturer's page: http://www.philips.ch/c-p/SCD630_26/avent-baby-monitor-digitales-video-babyphone

We cannot know the intensity of the vibration. However, the product is equipped with a noise recognition system (e.g. for crying or shouting).

It has its own data transmission (WLAN), so it can be used wherever there is electricity. It does not work without wireless data transmission.

No, unfortunately this is not possible.

According to Philips, this is not possible.

no that is not possible. mfg

unfortunately, the baby monitor cannot be mounted on the wall.

After a quick Google image search I found a picture that shows a good size comparison. https://i.ytimg.com/vi/EzRP3cP-uhI/maxresdefault.jpg Depends on how big your hands are :)

Ok, thanks, that means it's not encrypted. https://www.security-insider.de/hacking-des-ur-wlan-standards-80211-fhss-mit-gnu-radio-und-usrp-a-180375/