Here updated transformer to this one:
and this one:
Both worked with the integration of the power kit using a legacy 12VAC Nutone chime and now have a testing hot spare.
A few months later upgraded the chime to this one:
Works fine except when the Hikvision DB would reset itself. Now it doesn't anymore moving to a new proxy.
I do not utilize the Android app and have the DB integrated to my Alarm panel and Home Assistant, Homeseer and Alexa Show devices (very slow pop up video).
You could have a bad power module as one user has reported this using the DB1.
Automation touchscreens do instant pop up video on front door 2nd PIR. I had issues with integrated PIR so not using it at all these days.
using an Elk Doorbell circuit board (ELK-930) and an Elk debounce board (Elk-960) and have added a current sensor.
I have had to use the Android app to configure it back to a mechanical chime. That is a PITA.
I cannot make any adjustments to this feature with the Hikvision Batch Configuration.
I can now though configure the DB1 new reboot via the Hikvision Batch configuration which I have done a few times now. Using the wireless on the Lenova M93 running Windows 2016 server.
Thinking what fixed the random reboots was using a proxy for all of my video connections==> (I had too many and you are limited to three)
, Home Assistant, Zoneminder, Homeseer, OmniTouch Pro touchscreens (propietary interface to alarm panel) and a "few" custom Kodi boxes (Kodi running in Linux) on modded Android TV boxes (not using android)
BTW installed a Ring alarm / doorbell configuration in House two with a Home Assistant plugin. Works great and do not utilize the Android app any more. But its all in the cloud.