Doorbell Transformer?
 

Trying to install my Nest Doorbell. First step is to check the voltage of the transformer. What I find doesn’t match pictures I see online. Can anyone confirm that this is the transformer. I’m not exactly Mr. DIY, but this seems relatively simple assuming I’m in the right place. I’ve switched thermostats, light fixtures, switches and outlets before.

No picture. It is square and will have two screws that your house wires connect to. The two wires go to 110 vac.

http://forums.pelicanparts.com/uploa...1600450752.jpg

Did you remove door bell wires from that. I never seen a setup like that. Might be for heating system.

Can you check voltage at the doorbell wires on the front porch?

That box is the only thing I can find that sort of looks like a transformer. I could check at the doorbell, however it on stone and has caulking to weather proof. Was Hoping not to disconnect doorbell until I verified the voltage.

It looks like the top part of the box you show. look for one that has the doorbell button wires.It only has two screws on it no spade plug things.

The voltage will be between 12-24 volts. You can check it at the chime or buzzer.

That is a 24 volt a/c transformer.

Ok, I will check the voltage at the chime and go from there. My doorbell transformer must be somewhere else that I haven’t located yet. However, as long as the voltage is in the correct range, I don’t think I need to locate it for install.

That looks like a fan control.

https://www.zoro.com/honeywell-center-fan-control-r8285a1048/i/G0934236/?gclid=EAIaIQobChMIyZqLjrHz6wIVZAiICR1wLgeqEAAYASA AEgI7e_D_BwE&gclsrc=aw.ds

https://www.amazon.com/Honeywell-R8285A1048-Center-Switch-Action/dp/B00QW2WSVE

No problem...just push the doorbell for more heat.:)

Item on the left - yes.

The item on the right is a transformer. (Do a google search on doorbell transformer images.)
I'm assuming you've got a meter - what is the voltage reading on the terminals with wires connected?

Good call Fint, that looks like it’s a fan controller. Finishing up some work, will check voltage at the chime layer this afternoon.