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This is an accepted version of this page This is the latest accepted revision, reviewed on 7 March 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...
A hearing dog is a specailized assistance dog specifically selected and trained to assist people who are deaf or hard of hearing by alerting their handler to important sounds, such as doorbells, smoke alarms, ringing telephones, or alarm clocks. They may also work outside the home, alerting their handler to sounds such as sirens, forklifts, and ...
The technology used in "siren mode" (called an "alert tone" by Genasys [5]), primarily for usage in emergency situations, has also been used for crowd control. In this mode, it allows sound transmission at around 2,000–4,000 Hertz , which causes maximum discomfort for the people targeted, as this is the frequency range at human hearing is ...
Notable features: Brightness variable from 0%-100% | Sunset simulation | 13 preloaded alarm sounds | Numerous relaxation sounds | Night-light setting The Hatch Restore 2 is a full-featured sunrise ...
Individuals who are deaf or hard of hearing utilize a variety of assistive technologies that provide them with improved accessibility to information in numerous environments. Individuals who are deaf or hard of hearing increasingly benefit from advances in captioning technologies, which provide real-time transcription of spoken language in ...
an alarm clock that sounds an alarm at a pre-set time, often used to wake a person up or remind them of an event. a fire alarm which is used to give occupants of a building early warning of a potential fire and give them time to evacuate. warning devices on a vehicle that sound when it is moving in an unexpected direction, such as reversing,
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