(1) Door sensor with two "self contained" alerting melodies
Model DA1D is a sensor that is a self-contained, battery operated, magnet activated sensor, with a built-in "pleasant" alerting melody with two different selectable alerting melodies, for closed door applications.
New dual alerting melody designed and offered exclusively by Mr. Chime:
(1) Ding Dong (only one time)
(2) Chirp Chirp
One alerting sound for the front door and a different sound for the back door.