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11 September, 09:36

Can you think of some places where we use electric buzzers

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  1. 11 September, 09:49
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    To unlock a door and indicate to the person that the door is now unlocked

    Explanation:

    Schools all have doors locked. Visitors/parents need to press a button. That creates a buzz sound in the office, secretary presses a button to unlock the door. The person trying to enter the school hears a buzz and the secretary telling them to enter the building.
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