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A voice-activated radio-dispatched alarm, or VARDA-alarm, is a type of burglar alarm that, when activated or "tripped", broadcasts the type of the alarm and the transmitter location over the local police radio frequency using a pre-recorded audio message. [1] In 1968, the voice-activated radio dispatched alarm (VARDA), was invented.
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. Examples include personal systems, neighborhood security alerts, car alarms, and prison alarms.
Typical modern padlock with keys Padlocked door Padlock in the Mayenne Castle Museum (France) Padlocks are portable locks with a shackle that may be passed through an opening (such as a chain link , or hasp staple) to prevent use , theft , vandalism or harm .
#14 Sleep Soundly, Anywhere With The Portable Door Lock. Review: "This door lock is great! It is just what I needed to secure my apartment door at night. It is easy to use and works well. I ...
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 ...
A false alarm is one of the most significant issues with conventional alarm systems. They can be triggered for several reasons, such as the movement of pets, [6] typing in the wrong security codes, or loud sounds from windows or doors. In the case of fire alarms, aerosol sprays, smoking, or burning food can all lead to a false alarm. [5]
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