About Compatibility: Wyze Video Doorbell v2 may not be compatible with your in-house chime due to your chime and transformer limitations. If you cannot locate the Trans terminal (or 0,1,2 terminal) in your chime box, OR your in-house chime plays a series of metal striking sounds instead of one ringing, your chime may not be compatible with Wyze Video Doorbell v2. To check compatibility, visit our Wyze Help Center.