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2. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   Wireless home alarm system control panel A house alarm. A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary or property damage, as well as against intruders.

3. Alarm device - Wikipedia

   en.wikipedia.org/wiki/Alarm_device

   There are many kinds of alarm devices. The most common types include: 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.

4. Home security - Wikipedia

   en.wikipedia.org/wiki/Home_security

   A home security camera system software on a Windows laptop for monitoring. Home security includes both the security hardware placed on a property and individuals' personal security practices. Security hardware includes doors, locks, alarm systems, lighting, motion detectors, and security camera systems. Personal security involves practices like ...

5. Fire alarm notification appliance - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_notification...

   Voice evacuation systems (also called Voice Alarm Systems) have become popular in most countries. Voice evacuation alarms typically are not as loud as horns or bells (although generally standards require the same minimum sound pressure levels), and usually sound an alarm tone (typically a slow whoop, code-3, or chime tone, although this depends ...

6. The Mosquito - Wikipedia

   en.wikipedia.org/wiki/The_Mosquito

   The Mosquito or Mosquito alarm is a machine used to deter loitering by emitting sound at high frequency. In some versions, it is intentionally tuned to be heard primarily by younger people. Nicknamed "Mosquito" for the buzzing sound it plays, the device is marketed as a safety and security tool for preventing youths from congregating in ...

7. 8 white noise machines for better sleep - AOL

   www.aol.com/news/8-white-noise-machines-better...

   The Hatch Restore 2 is a cross between a sunrise alarm clock and a sound machine that enables you to play consistent white noise. ... I have the device’s beautiful lightscape and serene noise to ...