Does Sentry work with my existing mechanical or electrical doorbell chime?

Yes. If your doorbell wiring is connected to an existing chime, you can enable doorbell chime support in Sentry Home -> Settings -> Doorbell Chime.

Warning: Before enabling the “Doorbell Chime” option, make sure that a doorbell chime is properly installed. Enabling this option without an existing chime may damage the Sentry doorbell and/or your transformer and could pose a serious fire risk when Sentry’s doorbell button is pressed.