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2. A Self-Defense Expert Recommends These 12 Personal Safety Devices

   www.aol.com/10-best-self-defense-weapons...

   The best self-defense weapons are easy to carry and use. Our expert has tested self-defense weapons for years these 12 discrete personal safety devices.

3. Panic button - Wikipedia

   en.wikipedia.org/wiki/Panic_button

   A panic button alarm is a self-contained electronic device powered by an internal long-life battery, typically Waterproof and designed to be shock resistant and highly durable. In a medical emergency, the advantage over a simple cell phone is that the person in distress may not have the ability to dial the three digits for 911, and may not have ...

4. Alarm device - Wikipedia

   en.wikipedia.org/wiki/Alarm

   safety alarms, which go off if a dangerous condition occurs. Common public safety alarms include: civil defense siren, also known as tornado sirens or air raid sirens; fire alarm systems. fire alarm notification appliance "Multiple-alarm fire", a locally specific measure of the severity of a fire and the fire-department reaction required. smoke ...

5. Medical alarm - Wikipedia

   en.wikipedia.org/wiki/Medical_alarm

   Medical alarm device with GSM support. A medical alarm system may consist of Personal Device a wireless transmitter, which is worn around the neck, on a belt, or on a wrist; an application running on a smart phone and carried in a pocket; the device may contain a speaker and microphone; Sensor(s) fall detection sensors; movement sensors

6. Siren (alarm) - Wikipedia

   en.wikipedia.org/wiki/Siren_(alarm)

   A siren is a loud noise-making device. There are two general types: mechanical and electronic. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines.

7. Security alarm - Wikipedia

   en.wikipedia.org/wiki/Security_alarm

   The alarm system is required to have a maintenance check carried out every 6 – 12 months. In the UK, 'Audible Only' intruder alarm systems require a routine service visit once every 12 months and monitored intruder alarm systems require a check twice in every 12-month period.