Posts Tagged ‘ IP55 ’

Weatherproof Bullet Security Camera

Monday, May 2nd, 2011

There are very few bullet cameras these days that can’t be called weatherproof bullet security cameras.  In fact, all of the bullet cameras that we offer for sale at Security Camera King are weatherproof.  That is one of the benefits of owning a bullet security camera.

A weatherproof bullet security camera bridges the gap between the typical box camera and the conventional dome camera.  Box cameras are great cameras and have been around for a long time.  However, to maintain the box camera’s versatility it doesn’t come with all the necessary parts.

That is, for example, a box camera is usually sold as the body of the camera with the lens sold separately.  This is done to increase versatility, as you can always change lenses if you change the location or want a different field of view for the weatherproof bullet security camera.  However, this added versatility doesn’t come without added cost.

In addition, most box cameras were designed to be used indoors, under protective cover from the weather and the elements.  If you want to use a box camera outdoors, you will need to purchase an additional accessory, an outdoor camera housing.  While neither the lens nor the housing are terribly expensive, they are nonetheless, an expense that you need to consider when comparing cameras.

The dome camera is also an excellent camera.  Originally designed primarily for indoor use, the dome camera has come a long way in a relatively short period of time, technologically speaking.  Like the other models, dome cameras have their own advantages and disadvantages as well.  One such disadvantage is that due to their small size, dome cameras cannot support as many InfraRed Light Emitting Diodes (IR LEDs).  This ultimately means their range in conditions with little or no light will not be very long.

The weatherproof bullet security camera bridges the gap between the box and dome cameras because it features some of the items that are considered the very disadvantage of the other types of cameras.  For example, most bullet cameras come with a factory inserted lens.  Usually these are of the fixed type but there are many weatherproof bullet security cameras that come with varifocal lenses and motorized irises as well (See Security Camera King’s Product# OB-LX550IR150L922).

When shopping for a weatherproof bullet security camera, you probably will at some point, begin comparing each camera’s specification sheet. One term that we would like to clarify is the IP code or IP rating.  You’ll see this rating in the specifications as something like “IP65.”

IP stands for ingress protection and is a standard written and maintained by the International Electrotechnical Commission or IEC.  Its purpose is to provide specific descriptions of a camera enclosure’s ability to protect the camera inside.  An Ingress Protection rating has two digits (like the example in the previous paragraph).  The first digit represents the degree of protection from solids while the second digit indicates the degree of protection from liquids.

The first digit of the IP rating can range from 0 to 6.  A rating of 0 means there is absolutely no protection against contact and ingress or objects.  As this digit increases in value up to 6, each rating indicates protection from progressively smaller objects.  A rating of 6 for the first digit means there is absolutely no ingress of dust and there is complete protection against contact.

The second digit of the IP rating can range from 0 to 8.  Again, a rating of 0 means there is absolutely no protection against liquids.  As this digit increases in value up to 8, each rating indicates protection from progressively more intense contact with water.  A rating of 8 for the second digit means the camera is protected from continuous immersion in water deeper than 1 meter.  There for a reasonably good IP rating for a security camera would be IP55 or IP65.

Last but not least is the IR range.  Not all, but a good majority of the weatherproof bullet security cameras are also capable of IR video imagery.  This is accomplished by using IR LEDs to “light up” the field of vision.  This IR “light” is invisible to the human eye.

Generally, the more LED’s the greater the range and area of coverage under IR conditions.  Weatherproof bullet security cameras have lots of room for IR LEDs and can obtain fairly long ranges.  Before you buy the camera, make sure you check the range you will require so as to by the appropriate camera.


Outdoor Wireless Systems Alarm

Friday, October 1st, 2010

An outdoor wireless security systems alarm is usually some sort of motion detector sensor(s) that when actuated initiates some sort of audible or silent signal. There are several variations on this theme, including digital video camera systems that can function as an outdoor wireless security systems alarm. However, the purpose of any of these variations is the same; alert the user when a defined boundary or perimeter has some sort of motion-detectable activity and do it by using sensors that do not require wired connections.

There are several uses for outdoor wireless security systems alarms that work on the basis of motion detection. This sort of system can be used as a welcome chime for your business or home. If your residence has a particularly long driveway these alarms are excellent for notifying you when you have a visitor or delivery.

Likewise, an outdoor wireless security system alarm can be used to alert you to the presence of someone or something (such as an animal) in a boundary or perimeter. These are particularly useful in industrial and other business applications where safety and security concerns mandate that no unauthorized persons are allowed in specific areas. Residentially, a perimeter can be defined around your house or property and whenever this area has been breeched the alarm can alert you immediately, giving you advanced notice of someone’s presence. They are also great for use in securing outdoor swimming pools, water features, or ponds.

There are two basic types of outdoor wireless security systems alarm units, based on their function. The first type is a standalone outdoor wireless security systems alarm and the other is an integrated sensor that communicates with a central control unit that has additional zones connected to it such as doors and windows for example.

A standalone unit usually consists of a wireless motion detector sensor that transmits its signal to a corresponding wireless receiver. The receiver unit is often about the same size as a cell phone and usually contains its own speaker and chime/alarm sound to notify you when the sensor has been actuated.

The integrated sensor consists of a wireless motion detector sensor that transmits its signal to a corresponding wireless receiver that is hard-wired to a central control unit, or to a central control unit that contains its own on-board wireless receiver. Actuation of this sensor sends a signal to the control unit that may react in several ways including sounding an alarm or chime, notifying a professional monitoring service, or even turning on a light or series of lights.

Regardless of how the signal is received, the motion detector sensors basically work the same on the basis of infrared wave technology known as PIR or Passive InfraRed Sensing. The PIR sensor measures the infrared radiation from objects with its range or area of view. Motion detection is based on the change of infrared radiation detected when an object with one heat signature passes in front of another object with a different heat signature. Of course the infrared radiation is invisible to the human eye but readily detectable to the sensor.

Outdoor wireless security systems alarm sensors should be constructed to withstand the elements. Many high-quality sensors have been evaluated to the Ingress Protection Code and have a rating of IP55 or higher. In addition, most outdoor wireless sensor units operate on a standard or rechargeable battery. Some manufactures claim a normal operating period of up to two years on one battery.

Many sensors have selectable fields of view or ranges. It is common for a sensor to contain a switch that can select a 45 foot range or a 15 foot wide angle pattern for example to allow for specific user needs.

Transmission ranges vary based on sensors, manufacturers, types etc. but it is not uncommon to find outdoor wireless security systems alarm sensors that have ranges up to 1000 feet or more. However, most of these manufacturer specified ranges are based on Line of Sight or LOS. LOS range means the distance between the sensor’s antenna and the receiver’s antenna without any objects blocking the view between the two. Generally, objects that do impede the LOS do not necessarily prevent transmission but most often reduce the range. The reduction of the LOS range varies based on the object or material that impeded the LOS such as a window, wall, building, trees, etc.

The cost of an outdoor wireless security systems alarm varies but are normally very affordable for both residential and business applications.