Assuming you are replacing the current doorbell. So it already have the wire from the indoor chime.

So outdoor replace the switch connect with the wire is no problem.

For the indoor, you have to open up the chime and see the connection. According to this August doorbell, normally have a supply 16-24v from the chime. But cannot trust totally.

So you got to inspect the chime side is either direct 240v using or have a transformer step down.

With both way, either you have to use a transformer or tap the chime transformer power. You can use that chime box to cover up everything.

Not difficult if you replacing the current doorbell.

Just like the alexander3133 diagram.

I mean the chime is the existing chime. Make use that chime internal transformer and the cover for the august thing.

You have to rewiring the chime side so the outdoor 2 wire become live and neutral. By just connect to the chime transformer.

Very much depend on the existing chime.

With that wire in the picture , it is pretty easy to install the cam now.

Get the transformer in lelong as idoblu mention (quite expensive) and a plastic electrical box that big enough for the transformer.

From the picture got 5 wire. The top 2 yellow wire is go to the outdoor switch 24v. The 3 wire below is live, neutral and earth 240v.

For the rest of join wire and case up the transformer, get a electrician if you not experience.

Since you don't have the chime, than you don't need to get 1. People recommended the chime is
1) if you already have the chime and modify to use for the August cam.
2) internal chime have the transformer. So you can make use that transformer. The others parts is useless after modify.
3) the chime box are look nicer to be hang on the wall. Than a plain plastic box.
4) buying the chime is cheaper probably than a transformer and a box.

Once you modify the chime for the August cam, the chime no longer will sound. Got to understand this. Cause you already bypass the solenoid in it.

The Amazon transformer also can be use. But you got to check the August cam power usage. The August cam pic doesn't show the power usage. The Amazon transformer only supply about 8w or 0.33A. Compare to the lelong which supply about 80w.

If the August cam use below 8w, you can go ahead get the Amazon transformer.

If you can't find the chime with the suitable voltage, than forget it. Unless you want the chime box to make it nice.

The chime wouldn't work together with the August cam is because you modify it. Not the voltage different. The purpose is to use the Chime transformer. But once you modify to use the transformer, the chime solenoid that strike the bell will be disconnect. And the 2 wire suppose to connect to switch outdoor become a 24v supply wire for the August cam.

The 3 transformer you suggest is working find for the August cam. It well over 0.2A.

But the transformer size is freaking big and heavy. Are you sure you want it to hang at the wall? Even the 25VA size is consider big. No chime box can cover all this 3 transformer. Better check the size.

DIN rail is a long bracket for mounting the electrical component. You need to drill 2 hole to screw the rail to the wall and hook the transformer on the rail. It come in 1meter and material is either metal or aluminium. Price vary from RM5 to RM20. Which RM5 is freaking thin and soft metal. You wouldn't want it to mount the heavy transformer on it. Cut the rail to your desire length.

I think DecaPix suggest the adaptor is much more suitable. Cheaper.

I m not sure your skill. (you didn't mention here) Better just get the electrician. Even it is easy wiring.

Till this stage, any electrician can do the wiring.

Specially for DecaPix suggest transformer. Get a wall socket install, cut the adaptor wire and joint to the outdoor 2 wire. Than plug the adaptor to the wall socket. Parts less than RM90.

If no skill, than don't touch at all. Keep on looking for the electrician that can do it for you. I don't understand what so difficult with such easy wiring. Probably you didn't explain much to them or your explanation to them too complicated ?

Your outdoor should have the doorbell wiring already. Given the picture you post. There is no hacking or wiring to do at all. Please check your outdoor where the wiring goes. Either the developer leave the wire like that (picture) for outdoor or already have a wall mount doorbell socket switch. Take out that doorbell switch and replace with the cam.

Even I show you the wiring below picture, you still have to use multitester to check and confirm the wiring which is which. Cause that yellow wire can make people mistake and confuse. (There are too close).

Me not sifu la.

Me some kucing kurap understand basic only.

Sorry I don't understand your connection.

What I understand about TS is his August cam require power to run. The August cam is all in 1 doorbell. The August Cam is wifi to router and to TS phone.

So no chime or doorbell switch. Not require at all.

The connection will be

The AC Supply => adapter => wire to the outdoor => the August cam.

Hope not kill him.

How you know it is 60-70ºC ?

And not 30-34ºC.