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A shout or bell to warn that fire has broken out. A device making a loud noise that gives warning of a fire. An alarm that is tripped off by fire or smoke.
1 3 color cctv video camera w omnivision cmos. 4 channel dvr pci card video security camera cctv.
Sensors are connected to a control unit via low-voltage wiring or a narrowband RF signal which is used to interact with a response device.
1 3 color cctv video camera w omnivision cmos. 4 channel dvr pci card video security camera cctv.
Motion can be detected by measuring change in speed or vector of an object or objects in the field of view. This can be achieved either by mechanical devices that physically interact with the field or by electronic devices that quantifies and measures changes in the given environment.
Ontario Private Security And Investigative Services.