Posts Tagged ‘ security camera system’



Security Flood Light DVR Camera

Written By:
Thursday, January 20th, 2011

Nothing says “”Gotchya!” to a potential intruder, vandal, or burglar better than a security flood light DVR camera. Thanks to modern technological improvements these devices are an entire compact digital video security system. They can be used in both residential and commercial applications and can be extremely effective when placed in the proper location.

Not only does a security flood light DVR camera help to protect and prevent perpetrators from causing damage or breaking and entering, but it also offers positive deterrence. It’s already been proven by the law enforcement agencies in London, England and New York City that the mere presence of digital video cameras deters criminal activity.

However, the security flood light DVR camera takes it one step further. Not only does it record still digital photographs or digital video images of the intruder, but once the unit senses motion, it snaps on a powerful high wattage flood light illuminating the surrounding area and “spotlighting” the intruder as well.

In addition to protecting homes and businesses, these units are great for protecting other property as well. Boat docks with electricity, barns, storage areas, specific portions of land, back entrances of retail stores, and no-trespassing industrial areas as well can benefit from the protection of a security flood light DVR camera.

The units are relatively easy to install and use as well. Basically, all that is required for installation is to mount the unit, connect it to a standard residential type power line, and select the settings you desire. Then walk away and be confident that your security flood light DVR camera will protect you and/or your family, business, or property.

Before we provide some detail about the design and function of a standard security flood light DVR camera, let’s briefly describe a typical digital video security camera system and how it works.

Most standard digital video security camera systems contain one to several cameras, a Digital Video Recorder or DVR, and perhaps a monitor. The cameras are mounted in various strategic locations and send their digital video data to the DVR unit by means of a digital video cable run from each camera to the unit, or wirelessly using radio signal transmitters and receivers.

The DVR unit, much like a highly specialized personal computer, contains a hard disk drive like those found in computers. The DVR unit processes the digital data and creates a digital video file that can be viewed live on a monitor and/or saved on the DVR for later use.

A security flood light DVR camera is basically a miniature version of the basic system without the monitor. The unit contains all the devices (sans the monitor) within one relatively small, compact fixture. The floodlight is usually a powerful 500 watt halogen flood lamp. These lights can project a powerful beam of light in a relatively wide field of vision.

Connected to the light, DVR, and the camera is an infrared motion detector. The motion detector, known as a PIR or Passive InfraRed sensor, can detect the infrared radiation emitted by the objects in its field of vision. When this “heat signature” changes greatly or rapidly, the sensor interprets this as motion. The sensor activates a relay that switches the security flood light, DVR, and camera on. Depending on the model, the entire unit switches off either after motion is no longer detected or specified time period after the initial “On” state.

When the camera is switched “on” it immediately begins capturing digital video images (or stills), with the flood light helping to provide a crisp, clear, bright picture. An on board processing chip saves the data either as digital photographs or digital video files to the DVR.

The DVR in this case is not a large hard disk drive, but usually consists of an SD card (Secured Digital card), a compact flash card, thumb drive or similar mini-portable memory device. All the user needs to do is remove the SD card, transfer the files to their personal computer and view, print, or make movies disks of the saved data.

Although a security flood light DVR camera cannot provide the extensive precise coverage of a full size standard digital video security system, it does offer an economical alternative and can be quite useful for specific situations. Contact our security experts via Live Chat or telephone if you have any addition questions or would like to make a purchase.

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Web Ready Security Camera System

Written By:
Monday, January 10th, 2011

If you need to be able to monitor your security and surveillance system cameras from just about anywhere in the world at any time, consider using a web ready security camera system. These systems use the internet as the vehicle for transmitting their data so anywhere there is broadband internet access, there is potential for monitoring your home or business security camera system.

A web ready security camera system is reasonably priced, easy to install, and easy to operate thanks to technological advancements in the electronics and computer fields over the past few years. It differs from a standalone digital video security camera system in that it utilizes the internet to transmit the signals, and a personal computer or Mac computer to monitor and store the digital video image files.

A standalone, non-web ready security camera system consists of one or more digital video cameras, a Digital Video Recorder (DVR) with a Digital Signal Processor (DSP), and a monitor. The digital video camera captures the reflective light from objects and transposes these light images into electronic images. The camera normally has an on-board analog-to-digital processing chip that changes the electronic information into pure digital or binary form.

A video transmission cable, usually an RG-59 coaxial cable, must be run from each camera to the DVR unit. The signals from the cameras travel through this cable to the DVR unit where the DSP compiles them into a digital video file. Digital video files can be extremely large in size so the DSP uses a COmpression/DECompression (CODEC) utility to shrink the size of the file without sacrificing a large amount of quality. After the digital video file is created it can be viewed live on a monitor or stored on the DVR’s Hard Disk Drive (HDD) for later use.

A web ready security camera system produces the same sort of final results but goes about doing it in a different way. First a web ready security camera system has either IP (Internet Protocol ready) cameras or an IP DVR or an IP server. If the system uses IP ready cameras, each camera has its own built in web server technology that is used for the Internet. The camera connects to the internet either via a Cat 5 Ethernet wire or wirelessly using a corresponding wireless modem or router.

If the web ready security camera system uses an IP DVR, then normal cameras are connected to the DVR and the system works like a typical standalone system. Except that the DVR (and therefore the digital video files and camera controls) can be controlled remotely via the internet and some other end-user device.

If the web ready security camera system uses an IP server, it may be able to digitize older analog based cameras and send them over the Internet or it may simply combine the signals of several newer digital cameras and send them over the Internet. In either case, the digital video file must be sent over the internet to a connected computer that can act as a storage and monitor device or to some other web-compatible monitoring device such as an iPhone, iPad, 3G and 4G smartphones and other similar devices. (Note that if the signal is received by another DVR or personal computer, the system does not have a device to save digital video files to and therefore can only be used to monitor the cameras in real-time).

Probably the most profound advantage of web ready security camera systems is the incredibly almost infinite geographic locations in the world where the system can be monitored and operated. Theoretically, anywhere there is broadband Internet accessibility; the system can be monitored and controlled.

Perhaps the biggest disadvantage to these types of systems is that since they are connected to the internet, a very public domain, they may be susceptible to hacker intervention and even computer viruses.

All in all, there is nothing that can provide you with such extensive capability to monitor and control your system remotely than a web ready security camera system. If you need more information or would like to purchase a web ready security camera system, please contact one of Security Camera King’s security experts today either via live chat or telephone.

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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.

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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.

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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.”

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