The item in the image is a service call bell, a manual device used to signal for attention in various professional and domestic settings. [1, 2]
Key Features
Design: Features a classic domed shape with a polished chrome or stainless steel finish and a weighted black base.
Operation: Produces a clear, loud "ding" when the top button is pressed down firmly with a finger or palm.
Durability: Most are constructed from all-metal, anti-rust materials to ensure long-lasting use in busy environments