i bought a Doorbell Dual (T8213) last november which has a battery, but can also be wired
the situation at home was that I had not installed a doorbell before, so there were no wires or chime.
To not charge the baterry every now and then, I wired the doorbell to a transformer, 24V 30VA from brand EZVIZ, cable/wire is 10 meters
Product sheet: https://mfs.ezvizlife.com/变压器-Datasheet.pdf?ver=94569&_gl=1*ceemof*_ga*MTY1MDU0NzY3NC4xNjc0OTMzMjUx*_ga_GFXNRVT2BW*MTY3NDkzMzEyMy4xLjEuMTY3NDkzMzI2OC40Mi4wLjA.
I do use Homebase2 and a eufy chime in the power outlet in my home situation.
Today i got to know, that my doorbell is shut down, due to low/empty battery. A message is shown in the android app. I did not get a notification.
Everytime i opened the android app, i saw the icon that it is wired connected. Never got to know things were not working fine. So i was very surprised that my doorbell is not working anymore.
Ok, temperatures the recent days outdoors were little lower, due to winter. About -2 degrees celsius at nights and +1 Celsius dayover. So, within ranges that the doorbell should work fine, in my opinion. In december it were 2 weeks with temperatures at around -10 Celsius at nights, and 0 celsius dayover. Also not temperatures to make the device stop to work.
My android app showing:
does my doorbell dual need the be replaced by a new device? Is it dead? Or will it get back on again when temperatures rise? It there a wiring problem, or transformer issue? It cant be that my device goes offline with longer periode of low temperatures (some periode around 0 degrees celsius, should not be a problem to keep de battery charged).