Let's say you've got a network, or a home theater, or a surveillance CCTV system all hooked up and ready to go. You turn everything on and...nothing happens. What went wrong? How do you even begin to know? What if there were Some way to test your system to make sure it was going to work, and identify the cause of issues so that they could be corrected?

There is, of course, such a way: Testers. Network testers, fiber optic testers, CCTV testers, and more. Many of them perform a variety of tests to ensure that everything goes off without a hitch once you flip the proverbial switch. In fact, many testers can be used during the actual installation to identify and solve problems as they happen, so you don't end up looking foolish when the time comes to unveil your installation.