Wireless 16 Camera Motion Detector Security Surveillance


Wireless 16 camera motion detector security systems are capable of providing total video security for any residence or business. These systems make installation a cinch and in addition conserve on system resources. In addition, these systems are incredibly versatile, especially when utilizing optional features.

Generally, the brain or heart of a video security system is the Digital Video Recorder or DVR. The DVR normally contains a specialized computer processor that is designed to perform the tasks necessary to create and store digital video files and coordinate and control digital video camera functions. For a wireless 16 camera motion detector security system only one DVR is required, although it is possible to create 16 camera systems using a variety of DVRs with lower camera input capacities (such as two 8-camera DVRs).

Since “wired” camera security systems must have a coaxial video transmission cable run from each camera to the DVR the only determining factor for the number of cameras used in the system is the number of video inputs that can be handled by a DVR (Usually 16 is the maximum. Systems requiring more video inputs than 16 usually utilize more than one DVR.)

However, the single most determining factor for a 16 camera motion detector security system is how the cameras’ wireless video signals are handled. Each camera must have its own unique frequency or channel on which to transmit its digital video signal. It’s important to pause here for a minute to discuss the use of the term “channel” as there is some ambiguity involved with the use of the term in the realm of video security.

Most of us would probably think of a channel as a specific frequency, such as a television channel or radio station channel which is one way the term is used in the industry. For example, a wireless camera may transmit on 921.103102 MHz which, for the sake of this discussion, we will call channel 1 or 921.205012 which we may call channel 2. That’s one security camera industry definition for “channel.”

However, often times “channel” is used to reference the number of video and/or audio inputs a DVR or receiver can utilize. In this instance a 9 channel DVR would be able to accept inputs from up to 9 different video cameras also called “channels.” For example the most common DVR units are four, eight, and sixteen channels.

Getting back to our discussion of wireless 16 camera motion detector security systems, these systems would normally require a 16 channel (camera input) DVR. They would also require 16 wireless cameras each on a different channel (frequency). The key factor for these systems would be:
1. Acquiring 16 cameras each transmitting on a different frequency; and,
2. Determining how to receive these signals.

This could be done in a variety of ways ranging from using multiples of receivers that total a video output to the DVR of a total of 16 individual video channels, or using multiples of DVRs that total 16 individual video channels or inputs with each camera input using a different frequency (also referred to as a channel). In addition, modern technological advances have produced IP or Internet Protocol ready cameras that contain their own web server technology. Sixteen of these cameras could theoretically be used to create a wireless 16 camera motion detector security system as well.

In these systems, each of these cameras have a built in PIR or Passive InfraRed sensor. These sensors can detect a change in infrared transmission, such as that caused by a moving object. The PIR sensors are normally connected to a relay that switches the camera video transmission on when motion is detected. The camera stops recording either after a predetermined programmed time period or when the motion detection ceases.

A motion detector operated camera offers several potential benefits that include:
• Conservation of DVR disk space since video is only transmitted when motion is detected;
• Conservation of power usage which is especially important if the cameras operate on battery power; and,
• An alerting function since the cameras only record if motion is detected (For example, some IP ready cameras or DVRs can send an email when the camera has been triggered “on.”)

In addition, wireless 16 camera motion detector security systems may be purchased with optional features such as day/night, Pan-Tilt-Zoom (PTZ), object tracking and many other options, all of which contribute to making these systems one of the most versatile video camera security solutions available today.

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