Hero’s Clever Trumpet Automaton: A 2,000-Year-Old Doorbell

Hero’s trumpet automaton was a type of early doorbell, announcing the arrival of guests and dignitaries	Source: Vibe Images / Adobe Stock

Much of the technology we have today is inspired by some of the most fascinating ancient inventions in history. One of these inventions was Hero’s trumpet automaton, which is considered to be one of the earliest forms of the doorbell. 

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