home security alarm
In 2009, there were an estimated 15,000 CCTV systems in Chicago, many linked to an integrated camera network. New York City's Domain Awareness System has 6,000 video surveillance cameras linked together, there are over 4,000 cameras on the subway system although nearly half of them do not work, and two thirds of large apartment and commercial buildings use video surveillance cameras. In the Washington D. C. area, there are more than 30,000 surveillance cameras in schools, and the Metro has nearly 6,000 cameras in use across the system. The Cheshire figure is regarded as more dependable than a previous study by Michael McCahill and Clive Norris of UrbanEye published in 2002.
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TMake sure the supplier doesn’t require a high cost, long term monitoring contract. Before you place an order, call the supplier and discuss your plan. The staff will help you develop a materials list and program the alarm panel appropriately. Ask to have the components labeled for each zone. Your DIY security system doesn’t have to be connected to a monitoring service that calls the police. It can simply trigger an alarm siren.