Alarm clocks are timekeeping devices designed to alert users at a set time, typically to wake them up or remind them of tasks. Commonly placed on nightstands in homes and hotels, they come in various forms, including analog, digital, and smart models.
Traditional alarm clocks use audible sounds like beeping, ringing, or radio music, while modern versions may feature customizable tones, gradual wake-up lighting, vibration, or nature sounds. Many digital and smart alarm clocks include additional functions such as temperature displays, USB charging ports, Bluetooth speakers, or integration with smart home systems.