that's not entirely true, actually there's a set of line voltage (220v AC) coming into the door bell unit itself and that is permanently powered. The door bell unit itself has a transformer which steps down to lower voltage that goes to the door bell switch and then back to the solenoid for the actuator

In other words, the door bell unit is always powered all the time, just that the solenoid which controls the door bell actuator (within the doorbell unit itself) doesn't get powered unless u press the switch, so touching the wrong part in the door bell unit will actually get u a shock eventhough the door bell is not pressed.

here's a pic for better illustration, it's from an older post here in LYN as well


here you can see that the AC part is always powered, so what you need to do is just connect the AC power's Live and Neutral, and the earth wire, to ur 13A socket. the wires coming from the doorbell you can ignore them, wrap with black tape or something.

In fact you can even loop the AC power source to a 13A socket and still keep the connection to the doorbell unit (so you get both). IP camera don't think will use a lot of power so it should be fine to loop.

Thank you for your detailed explanation. 
I will try it out.

One thing to note, the door bell wiring in DB is usually through a 6A MCB, therefore make sure the electrical appliances that you use on the doorbell 13A socket will not have high inrush current that might trip it.

13A socket normally has 20A MCB behind it, but if you are sure the item you connect won't use much electricity, then it should be ok.

How to install new door bell to my new condo? I just bought the door bell but not sure about the wiring.

Thanks

Can you open out the switch door bell cover and let us see the wiring color inside.

i bet its blue 

I bet najib win.

Oops, wrong place. 
I have to makesure it is blue even I know. We now guide the non experience user to wiring.

Guess, guess like that can send him to heaven. 

heaven is a good place   
btw my doorbell wires are still there hanging out from the wall. (3 years already moved in) 

I thought you already convert it to xiaomi automation ?

Ya not using the wires but still left hanging there kena scold by boss everyday 😭
One day I will convert to 3 pin socket. Already bought the box and socket but lazy to do.

Indoor wan or outdoor ?

Convert to 3 pin socket, than the indoor wire got to connect to L & N. But the 3 pin socket lack of earth wire.

The wires are hanging out from my indoor wall.
I think maybe got Earth wire

Oh, this wan. Thought the doorbell side.

Direct wiring your Xiaomi hub onto it.  Nice somemore.

Can you open out the switch door bell cover and let us see the wiring color inside.

I win 👆🏻😅

It is blue. So which wire I need to connect to the door bell?