Hi guys, I have a ABB 22002W02 doorbell and searching in the forum I’ve found some solution that worked for some BUS systems, but not with mine, here a couple of pictures.
I used the 4 wire system and connected the A1 and A2 to the a1,b1 which are the BUS.
Could you guys help me
Hi @Linolu25. Which Ring device are you trying to install? You can find the model name on the original packaging, or on the back of the Ring device itself.
Hi caitlyn, I’m trying to install a ring intercom
@Linolu25 Thank you for your answer! I’ve moved your post over to our Intercom board so an Intercom Specialist can provide further guidance. 
Hi @Linolu25 . Welcome to the Ring Community!
Our team advises against using the Intercom with any traditional intercoms that are not listed in our official list of compatible devices. It’s crucial to ensure compatibility to prevent any potential damage to your traditional intercom system. Our development team has thoroughly tested and confirmed compatibility with the devices listed on our official compatibility list. We value the safety and functionality of your intercom system, so we strongly recommend sticking to the devices that have been verified by our team. This will help ensure a smooth and reliable experience with Ring Intercom.
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