Home security used to be a concern only for those who lived in high crime areas. Increasingly, homes outside those areas are being targeted. As a consequence, home security systems are in much wider use. Rare nowadays is the home without one. Owner Bought and Installed Thanks to modern electronics, home security systems can now be purchased online or in the local electronics store. They are priced from around $100 to over $500. Many feature wireless installation, so the buyer avoids the high price of system installation. These systems normally include all the necessary features of the more common industry models, and they can be bought for a much lower...