Your in-house mechanical chime is broken - you press the doorbell, and nothing happens. So why do you need to attach Wyze Doorbell Chime Controller to a broken chime?
To protect Wyze Video Doorbell v2 from power surges!
We highly recommend installing Wyze Doorbell Chime Controller to your non-functional chime to ensure there's proper power connecting your doorbell. Also, the fuse wire in the included chime controller protects your new doorbell from high voltage that may cause damage.
Important: If you do not have an existing in-house chime or you are unsure of wiring, stop. Contact your local, licensed electrician for assistance.