Posts Tagged ‘ security camera system’



Wireless Outdoor Security Camera Systems

Written By:
Tuesday, January 4th, 2011

A wireless outdoor security camera system can be used for many different applications. The system is easy to install, easy to operate, and incredibly versatile in application. Since the wireless outdoor security camera does not require a video transmission cable to be run from each camera to the Digital Video Recorder or DVR, you may want to consider this system if cabling the system is impractical, undesirable, or simply can’t be done.

Standard standalone digital video security systems have three major components: 1) One to several digital video cameras; 2) A Digital Video Recorder or DVR; and, 3) one or more color monitors. The digital video cameras capture light images and turn them into electronic data that is sent to the DVR. The DVR creates a digital video file that can be viewed that instant (live) on the monitor and/or stored on the DVR for later viewing, archiving, etc.

These systems are connected by the use of various wires and cables. For instance, each digital video camera must have a coaxial cable run from the camera to the DVR unit. This video transmission cable is usually RG-59 type coaxial video transmission cable. It carries the video data from the camera to the DVR unit to be processed. Each camera also must have a smaller low-voltage DC wire run to it from either a power distribution supply box or a nearby plug-in transformer.

Wireless outdoor security camera systems eliminate the need to install the digital video transmission cable. Instead of using RG-59 coaxial cable the camera sends its video data to the DVR by radio wave signals. This is normally done in one of two ways. Either the camera sends its radio signal to a corresponding receiver which is located near the DVR unit and connected to it by cables, or the DVR unit itself has on-board receivers that the camera broadcasts its signal to.

The camera of a wireless outdoor security system may not be entirely wireless. Although there is no need to run the RG-59 coaxial cable in these systems, the cameras still require a power supply which is normally provided by the power distribution center box or a nearby plug-in transformer. However, there are cameras that are battery operated, using either one-time-use or rechargeable batteries. These cameras are truly wireless in that they have no video transmission cable or power supply wires run to them.

Since outdoor security camera systems do not require video transmission cabling, they can be much quicker and easier to install. Mount the camera, plug it in, and it’s ready. Even easier to install are the battery operated cameras; just mount the camera (no need to run a power supply wire) and it’s ready to go.

Wireless outdoor security camera system cameras use various technologies to send their radio signals to the designated receiver or DVR. One of the most popular methods that is used is the 2.4 or 5.8 MHz technology; this is the same technology used to send land-line based cordless telephone signals. It’s useful for this purpose because the signal is strong and virtually interference free.

It is important to note that the camera-receiver (or DCR with built-in receiver) relationship on wireless outdoor security camera systems have different specified ranges. Not all cameras have the same range. In fact wireless cameras may have a manufacturer’s specified range of from 30 feet to 2 miles Line Of Sight or LOS. LOS means a direct path in a straight line from camera to receiver that has no objects blocking the path. In other words, if you are standing at the point where the camera is mounted, you should be able to see the receiver (i.e. LOS).

Although the range is specified as LOS, it doesn’t necessarily mean that an impeding object along the path will prevent reception. In fact, seldom is the reception actually blocked by impeding objects; normally the range is just reduced. The reduction of the range is variable based on the transmission signal technology used and the material make up of the object(s) that fall within the LOS. Windows have less effect that walls or trees for example. This is not unusual as cordless telephones share this same sort of LOS range. Therefore, be certain the specified range of the camera satisfies your requirements before purchasing the camera or system.

Other than the need for replacing or recharging batteries, the cameras in a wireless outdoor security camera system or relatively maintenance free.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

Evaluations Of Camera Security Systems

Written By:
Tuesday, January 4th, 2011

In this article we will talk about evaluations of camera security systems and what you need to do and know to perform your own evaluations of camera security systems.

Evaluation of camera security systems can be difficult to do comparatively because of subtle differences in manufacturers’ digital video systems; so when trying to determine what system type or component to purchase, consider performing your own needs assessment first. Then search for the equipment that satisfies those requirements. Finally, you can compare different manufacturers’ or vendors’ brand offerings and prices.

Let’s cover the basics of performing a needs assessment based on the technological capabilities of digital video camera security systems. In order to make things a little easier to compare, we’ll break up the system into its three component parts and consider each component separately.

A typical digital video camera security system consists of one or more digital video cameras, the Digital Video Recorder or DVR, and a monitor. We will confine our evaluations of camera security systems here to standalone systems only.

First, determine what you need to protect or monitor. A room, a building, land, property located outside or inside, a parking lot, people, shoppers, cash register or teller areas, etc. Once you know exactly what you need to record, you can move on to deciding how you will record it. This is where the expertise of a professional installer is particularly helpful. An experienced installer can assess your situation and determine the precise placement and minimum number of cameras needed to do the job.

Once you know how many cameras are required, you can begin to narrow your evaluations of camera security systems. Generally speaking, the maximum number of cameras in a system determines the type of DVR that you will need. Customary DVR camera configurations include four, eight, and sixteen potential cameras (Note: The number of cameras is also referred to as “channels” which is not to be confused with another use of the word “channels” that describes specific radio frequencies). If a system requires more than sixteen cameras additional DVRs are used to satisfy the need.

So let’s assume our system will require seven cameras. We now know we will need an 8 channel DVR, but we aren’t ready to select the DVR just yet. Now let’s go back to the cameras. Of our seven cameras we know that four will be used outside and three will be used inside.

Now you must ask yourself what kind of digital video monitoring do you need? Do you require full time (24/7) day and night, do you track or follow objects (cars and people for example), and is audio required, and so on. Once you know the exact requirements of the camera you can determine exactly what type of camera you will need.

Let’s assume we need four outdoor, wireless, night vision infrared digital color cameras with a motion detector. These cameras will also be battery operated. In addition, we’ll need three indoor cameras without any special functions. However, we do need to determine how we will mount these cameras so we know what type of camera we will need for each of the seven cameras (dome, bullet, or box type cameras).

In performing your evaluation of camera security systems for this set-up you will also need to purchase a four channel receiver unit (a receiver unit that can accept four camera inputs and receive each on a separate frequency). This unit will be attached to the DVR. Speaking of which, we can now return to the DVR to consider what to purchase.

We know we need an 8 channel DVR. Do you want to be able to record for long periods of time without erasing over pre-recorded monitoring? If so, you should consider a DVR with a large capacity hard drive. Do you want to make copies of files on DVDs/CDs or other media? Do you need the DVR to connect to the internet? These questions will help determine the type of DVR you require.

Finally, ask yourself what type of monitor you will need. Will the monitor be used for setting up the system and occasional use or will the monitor be watched the majority of the time? (Monitors used for setup can be very small; monitors that will be used frequently should be large enough to view all seven cameras clearly).

After considering what we need, we can now perform evaluations of camera security systems to determine the best prices and products for our application.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

Night Time Outdoor Security Camera Kits

Written By:
Thursday, December 23rd, 2010

If you have property that you need to protect or monitor during low or no light conditions consider purchasing night time outdoor security camera kits. These kits can provide you with all the equipment you need to effectively monitor and protect your property, without the need for expensive outdoor lighting. Thanks to modern technological improvements, these kits are reasonably priced as well.

So what do night time outdoor security kits contain? Kits may vary based on manufacturers or vendors, but most kits contain at least two major components of a digital video security camera system: 1) Very low light or no light outdoor security cameras; and, 2) A Digital Video Recorder (DVR) with a Digital Signal Processor (DSP). Since monitor applications differ, and many systems may be able to use an existing computer monitor for your security camera system, monitors are usually sold separately from the kit.

Security Camera King offers a variety of digital video security camera kits including night time outdoor security camera kits. However, in addition to the digital video cameras and a DVR, Security Camera King’s security kits come complete with either plug and play camera cables or bulk cable, and either a multiple channel space saving power supply or a multiple channel power distribution box.

A night time outdoor security camera kit is a highly specialized type of digital video security camera system. These systems contain cameras that are designed for outdoor use and can record video in very low-light or no-light conditions. Let’s take a look at these cameras.

First, there are two basic types of digital video security cameras, indoor and outdoor. Indoor models are designed to operate under the protection of a building or cover of some type. They are not designed to operate when exposed to weather or the elements, such as rain, snow, hail, ice, etc.

Outdoor cameras are designed to operate in outdoor settings, exposed to and offering protection to the camera from, weather and the elements. The cameras are normally enclosed by a protective covering. Outdoor cameras are often rated with an International Electrotechnical Commission (EIC) code or rating that indicates the degree of protection that is provided to the camera. The rating is called an IP code or IP rating.

An IP code consists of the letters “IP” followed by two digits. The first digit indicates the size of the object that the camera is protected from ranging from 0 (meaning no protection) to 6 (meaning dust tight). Numbers from 1 – 5 indicate different sizes ranging from >50 mm to particles the size of dust. The second digit indicates the degree of protection against liquids ranging from 0 (meaning no protection) to 8 (meaning protection from immersion beyond 1 m in depth). For example, a very good IP rating is IP66 which means the camera housing is dust tight and offers protection against powerful water jets from any direction.

Night time outdoor security camera kits normally include digital video cameras that are specifically made for low-light (also called low “lux”) or no-light (infrared) use. “Lux” is a measurement term used to measure the intensity of light. For example, the light available in full daylight, but not directly in the sun ranges from 10,000 to 25,000 lux. In contrast, the visible available light of a moonless clear night sky is approximately 0.002 lux. Low-light or low-lux cameras can record video in lighting conditions as low as 0.002 lux, depending on the quality of the camera.

No-light cameras are usually called night vision infrared cameras. These cameras are designed to record high-quality video using near infrared illumination. The cameras sensor chip can detect near infrared spectrum radiation just like visible light; however, this illumination is invisible to the human eye.

Infrared cameras usually have an array of infrared Light Emitting Diodes or LEDs that surround the camera lens or are placed next to it so that their infrared illumination is focused on the same field of view as the camera. There are also LED “Illuminators,” separate arrays of just LEDs that can provide illumination for the camera also. Generally, the more LEDs the longer the range of the camera, so when purchasing these cameras be sure they have the night time range that you require.

Night time outdoor security camera kits have come a long way with the technological advances in computer and electronic components. Security Camera King offers several different night time outdoor security camera kits. Check out our products under “Security Camera Systems.”

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

Wireless Spy Camera

Written By:
Wednesday, November 17th, 2010

There are times when covert digital video monitoring is needed and nothing can fulfill your security and surveillance needs like wireless spy cameras from Security Camera King. We offer a full line of wireless spy cameras that maintain their concealed identity, transmit their video images without the need for wire hook-ups, and produce high resolution digital video.

Digital video security and surveillance monitoring can be classified into two different types based on whether the monitoring is obvious or purposely intended to be concealed. In the security video industry, these two categories are often referred to as covert (meaning hidden, stealthy, or concealed) and overt (meaning obvious, open, or unconcealed). Covert cameras that broadcast their digital video using radio signals are often referred to as wireless spy cameras.

Wireless spy cameras can be classified into two different types as well based on how the camera achieves being overt. Wireless spy cameras do this by either being incredibly small or disguised as some other object other than a security camera (or some cameras may use a combination of both). The incredibly small types of cameras are often referred to as pinhole type cameras and these are often designed to be disguised as very small objects as well. In order to understand how this is possible, let’s take a look at an incredibly small wireless spy camera and see how it works.

Digital video cameras work by focusing light images on a sensor that can transfer the light energy of the image into electrical energy. There are two different sensors that may be used for this purpose; a Charged Coupled Device or CCD or a Complimentary Metal Oxide Semiconductor or CMOS.

Each sensor performs the same task (transfers light energy into electrical energy that can be measured) but goes about it in a slightly different way. Typically, CCDs have provided a higher quality picture while CMOSs use much less electricity to operate. However, as electronic technology advances both are producing high resolution video images with a minimal amount of power needed to do the job.

These sensor chips, usually in the shape of a square, can be very small, as small as only 1/4″. Today’s electronic technology can produce incredibly small Integrated Circuit or IC chips that house the circuitry for processing video images, converting them to radio signals, and transmitting them to a receiver. Advanced lens physics and manufacture can produce a small wide-angle lens as small as 3.7 mm for example. Combine all three of these technologies and you could produce a wireless spy camera as small as the head of a screw or a button that produce high quality video images. In fact, Security Camera King carries two such cameras, our 2.4 GHz wireless button camera and our 2.4 GHz wireless screw camera.

Wireless spy cameras labeled as “2.4 GHz” refer to the technology that is used to transmit the wireless signal. A 2.4 GHz wireless spy camera uses the same high-quality dependable technology to transmit its radio signals as many land line based wireless telephones. The transmitter and receiver are tuned to a frequency in the 2.4 GHz radio wave spectrum.

The term “wireless spy camera” may impart a connotation of negativity associated with its name. It’s important to note that wireless spy cameras are not necessarily used for this purpose but may be used for the sake of aesthetics in appearance. Our 2.4 GHz Wireless Dog Baby Monitor Camera is a fine example.

Some wireless spy cameras may be used as standalone monitor systems. That is, the camera/transmitter unit comes with its own receiver/monitor. These units are usually designed for monitoring and not recording so although they may come with their own portable, handheld LCD monitor, they often do not record. Our wireless dog baby monitor camera is a good example of this; typically it is not necessary to record baby monitor transmissions.

Other cameras may be designed to use with a standalone video security system that includes a DVR   for storing video. These cameras may or may not come with a receiver, so it’s important that you check on this in the camera’s description or specifications area.

Sometimes the greatest advantage of using digital video security cameras is the ability to monitor and record activities without any indication that video monitoring is occurring and Security Camera Kings wireless spy cameras do just that. Check out our vast selection by clicking on “Security Cameras” then “Wireless Hidden Cameras” on the left side of our web page.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

Security Camera System for Courthouse

Written By:
Thursday, November 4th, 2010

A security camera system for courthouse use can augment other security systems such as metal detectors, guards, and bailiffs. While we tend to think of courthouses as extremely safe and secure facilities, they do have the potential for violent outbreaks. Further, if such a situation should occur, nothing can provide better documentation of the event than a digital video security camera system.

Is it really necessary to have a security camera system for a courthouse? Absolutely; while most courthouses have armed guards and metal detectors for protection, a digital video security camera system can also help deter violence, document criminal events, and protect courthouse employees.

In addition, most courthouse security measures focus on the interior of the courthouse. A digital video security camera system for courthouse use can provide not only interior coverage but just as important, exterior coverage where undesirable events may first begin.

Another advantage of a security camera system for courthouse use is the deterrence of violence and vandalism. It’s a proven fact that digital video security cameras do deter criminal activity. The statistics to support this fact have been shown in both New York City and London, England where police agencies use video security surveillance to monitor day to day street activities. Potential vandals or other criminal perpetrators are less likely to follow through on illegal acts if the know they are being watched and recorded by video cameras.

The occurrence of an unlawful act even in a courthouse requires proper evidence. Nothing can provide documentation for proof and evidence better than a digital video security camera system. A security camera system for courthouse use includes a Digital Video Recorder or DVR. Video images are converted into digital video files and saved on the DVR for later use if necessary. DVRs with CD/DVD writers or thumb drive writers can even provide multiple copies of video footage for distribution to law enforcement agencies, prosecuting attorneys, and other courthouse personnel.

Needless to say, working in a courthouse can be extremely stressful. Since there are always two opposing sides to every issue, there’s bound to be unhappy, tense, and impatient people that must interact with other courthouse employees. Unfortunately, there are isolated incidences where these emotions run rampant resulting in outbursts against courthouse employees. A security camera system for courthouse use can not only spot incidents when they begin and document them as they occur, but help deter them from occurring in the onset.

Another benefit of digital video security camera systems is remote control and monitoring of the system. Thanks to advancements in computer and electronic technology, a security camera system for courthouse use can be remote controlled from just about any other off-site location that has a broadband Internet connection. Authorized users can monitor and record Internet Protocol (IP) ready cameras in a totally different physical location than the system. This feature can be particularly beneficial in the unfortunate event of bomb threats, taking of hostages, and other acts.

The use of Pan-Tilt-Zoom (PTZ) cameras, especially in courthouse parking lots, can provide an early warning of an event before it reaches the inside of the building. Furthermore, DVRs with object tracking can detect motion and automatically pan, tilt, or zoom the camera to track or follow a vehicle or individual.

Maintaining the ultimate security of a courthouse is tantamount to maintaining justice. The very nature of the events that occur within a courthouse and the fact that individuals suspected of murder, manslaughter, and other violent crimes are brought to a courthouse for trial indicates the necessity for proven security measures.

A properly designed and installed security camera system for courthouse use will provide images of all individuals that enter and exit the building. Public areas within the courthouse can be monitored by video security cameras, freeing courthouse guards to provide their services where they are needed the most.

Security Camera King has some of the most sophisticated electronic digital video security camera systems available. If you are the responsible party for procuring a security camera system for courthouse use, contact one of our security experts today. Our trained security experts can help you with a needs assessment to determine the equipment needed to get the job done right.

Contact us by clicking on the “Live Chat” button at the top of the pare or by telephone at 866-573-8878 Monday through Friday from 9AM to 6 PM EST.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail