Here is simple project of doorbell for front door and back door circuit diagram. This circuit produces two different sounds, one for the front door and one for the back door.
Doorbell with Two Different Sounds Circuit Diagram:
The circuit takes NO CURRENT when not producing a sound and a 9v battery will last for many months.
Doorbell with Two Different Sounds Circuit Diagram:
Doorbell with Two Different Sounds
Reviewed by SYLVESTER ANWAR MASHI
on
06:54
Rating:
Reviewed by SYLVESTER ANWAR MASHI
on
06:54
Rating:
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