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Closed-circuit television (CCTV), also known as video surveillance, [1] [2] is the use of closed-circuit television cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point, point-to-multipoint (P2MP), or ...
Because network cameras are embedded devices, and do not need to output an analogue signal, resolutions higher than closed-circuit television 'CCTV' analogue cameras are possible. A typical analogue CCTV camera has a PAL (768x576 pixels ) or NTSC (720x480 pixels), whereas network cameras may have VGA (640x480 pixels), SVGA (800x600 pixels) or ...
In 1929, New York-based hardware store owner Maurice Coleman founded the Alarm Device Manufacturing Company, or ADEMCO, to build custom alarm systems for local businesses. [7] In 1960, the company went public. In 1963, ADEMCO was acquired by the Pittsburgh Railway Company, retaining the ADEMCO name to market its security and fire protection ...
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.
ADT Inc., formerly The ADT Corporation, is an American security company that provides residential and small business electronic security, fire protection, and other related alarm monitoring services throughout the United States. The corporate head office is located in Boca Raton, Florida. [5]
Tyco Integrated Security is a business unit of Tyco International.It is a company specializing in electronic security products, installation and services. The company's principal place of business in the US is Boca Raton, Florida; and Mississauga Ontario in Canada with over 10,000 employees and nearly 200 offices throughout North America.
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