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Many people use their phone for a morning alarm. But you might sleep better and wake up easier with a dedicated clock. Your phone may not be the best alarm clock if you want a good night of sleep
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,
The end of danger is signaled by a 1-minute continuous tone. Warning sirens are tested on the first Monday of every month at noon. The testing alarm is shorter than the general alarm (only lasting for 7 or 14 seconds) and may be a flat tone. The system commonly uses Teho-Ulvo sirens, which are electronic and are powered by horn loudspeaker arrays.
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 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 ...
Government reveals why phone users received alarm at different times 17:40 , Martha Mchardy Millions of people across the country received the first-ever nationwide test of the government ’s new ...
This Digital Projection Alarm Clock Beams The Time Onto Your Ceiling, Turning Your Bedroom Into A Futuristic Planetarium Review: "Kids have a very heavy sleep and other clock alarms noise weren ...
Sounds commonly used to indicate that a button has been pressed are a click, a ring or a beep. Interior of a readymade loudspeaker, showing a piezoelectric-disk-beeper (With 3 electrodes ... including 1 feedback-electrode ( the central, small electrode joined with red wire in this photo), and an oscillator to self-drive the buzzer.
A knocker-up or knocker-upper was a member of a profession [1] in the Netherlands, Britain, Ireland, and some other countries that started during, and lasted well into, the Industrial Revolution, when alarm clocks were neither cheap nor reliable. A knocker-up's job was to rouse sleeping people so they could get to work on time.