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An exterior siren goes off outside of the home; however, you can also hear it inside of the home. The reverse is true of an interior siren; however, the sound level will not be very pronounced outside of the home. The advantage of having audible sirens, whether the sound is louder inside or outside, is debatable. On one hand, the siren lets intruders know that police have been alerted, which may deter them from taking any further action, while some intruders may still proceed. Audible exterior sirens are also beneficial if you live in a populated neighborhood with neighbors close by, as they will hear the alarm; however, the audibility of the siren may be marginally beneficial if you live in a remote area where neighbors’ homes are out of range. Many of today’s security cameras have something called a motion detector installed. This is—as it sounds—a device that’s capable of detecting movement. What kind of motion it detects depends on the user’s custom settings. In the case of a home security camera, this will typically include any moving objects, and people in particular. The great feature of motion detection home security camera is its ability to send alerts the second it begins to record movement based on its settings. One of the great things about motion detection is that your camera still works for you in the background even when you’re away or logged out of the system.