A call bell is a

bell A bell is a directly struck idiophone percussion instrument. Most bells have the shape of a hollow cup that when struck vibrates in a single strong strike tone, with its sides forming an efficient resonator. The strike may be made by an inte ...

used to summon an attendant or give an alarm or notice. The bell alerts and calls the attention of the attendant who hears it. They are sometimes called service bell, reception bell, or concierge bell. A call bell can be placed on the countertop in hotels or other such facilities where people need to call attention to the person in charge to check them in, take their bags, of for any other reasons.

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{{Bells Bells (percussion)