The 3 pcs ring doorbell pro angle mount is specifically designed to work with the ring doorbell pro version only not for ring doorbell 2 or the other ring doorbell.
Ring doorbell adapter plate.
You can also use this 3 pcs angle mount for 3 different ring doorbell pro each angle mount for each ring doorbell pro and no more screw or expansion bolt is needed.
Holes are pre drilled for ring pro doorbell to simply attach both plate and doorbell to your existing intercom system.
Here to an existing intercom doorbell systems such as nutone m s systems and tektone.
Remove your original ring video doorbell once you have removed the original ring video doorbell and the mounting plate place the adapter plate with it s smaller side the beveled edge facing the wall.
This adapter plate is used to retrofit a ring pro video doorbell not ring or ring 2 see this listing.