Posts Tagged ‘ transmitter ’

2.4 Ghz Wireless Hidden Camera

Monday, October 3rd, 2011

Sometimes cameras need to be placed in areas where wiring would obviously give away the fact that the camera is hidden.  When this is the case a 2.4 Ghz wireless hidden camera is the perfect solution for the job.

Unless a camera has its own “on-board” Digital Video Recorder or DVR, it will need a video transmission cable, commonly RG59.  However a 2.4 Ghz wireless hidden camera can eliminate the need for cables by sending the video transmission signal via radio waves.

It sends the radio waves using an on-board transmitter and antenna that use the 2.4 Ghz technology.  This is the same technology that is often used by many land-line based wireless telephones.

The 2.4 Ghz technology offers powerful and clear transmissions and is an excellent choice for wireless technology for digital video cameras.  However, this type of wireless communication is also known as Line Of Sight or LOS technology.  LOS refers to the method by which it transmits and receives and the fact that impeding objects can affect the transmission be reducing the maximum range of the camera.

LOS means that the maximum transmission range of the signal is as stated as long as the camera antenna and receiver antenna have a direct, unimpeded distance between them.  Also, the physical makeup of the object(s) will also contribute to determining how much the range may be reduced.  Trees, walls, glass, buildings, and other objects that are between the camera and the receiver all have an effect of reducing the manufacturers’ stated LOS range.

It’s important to understand this concept because if you know that the distance between where you want to mount your camera and where your receiver is, is 500 feet and your camera is rated for 500 feet but there are objects like trees and a couple of walls between the two, it is likely that the range will be reduced and the receiver may not be able to receive the signal.   If this is the case, it may be beneficial to try using a camera with a 1,000 foot range instead.

Security Camera King has many different types of 2.4 Ghz wireless hidden cameras available for purchase.  Some are designed to work with a DVR and others may just be designed to transmit to a monitor (a baby monitor is a good example of this).  The following list is a partial list of some of the 2.4 Ghz wireless cameras we have available for purchase:

  • Product# HC-BTNCM-G — Black and white hi resolution button camera*
  • Product# HC-SCREW-G — Black and white screw camera
  • Product# HC-BBMNT-GC — Toy dog baby monitor
  • Product# HC-MOTIOD-G — PIR Motion Detector
  • Product# HC-WALLC1-G — Black and white wall clock
  • Product# HC-EXITS-G — Black and white Exit sign
  • Product# HC-DSKSP-G — Desktop speakers
  • Product# HC-VNTMR-G — Vanity mirror with Touch Activation
  • Product# HC-CBNDT-G — Carbon Monoxide Detector
  • Product# HC-WNDTN-G — Black and white wind tunnel camera
  • Product# HC-ALARC-G — Black and white Alarm clock camera
  • Product# HC-CORPH-G — Cordless House phone camera
  • Product# HC-BMBOX-G — Black and white CD/Boombox camera
  • Product# HC-ANMCK-G — Black and white suspended animation clock camera
  • Product# HC-CBNDT-GC — Carbon monoxide detector
  • Product# HC-ELCBX-G — Electrical utility box camera
  • Product# HC-ARWCK-G — Air Wick Air Freshener Camera
  • Product# HC-TISSU-G — Black and white tissue box camera

*Most of the cameras above that are listed as “Black and White” are also available in a “Color” version as well.

As you can see, a 2.4 Ghz wireless hidden camera can be disguised in many ways.  The above list is only a partial list; we have even more cameras to offer than this.

One last word of caution.  Each state has different laws governing the use of cameras and especially audio recorders without the subject’s knowledge.  Make sure you confirm you state’s laws before attempting to record anyone covertly.  This doesn’t mean that you can’t record improper or criminal activity but the planned, deliberate, covert recording may require special concessions on the part of the person recording.

If you are interested in purchasing one of these cameras or have any questions at all, our security experts in our support team will be glad to help you.  To contact one of our security specialists you can use the on-line “Live Chat” feature or telephone 866-573-8878 Monday through Friday from 9AM to 6PM EST.


Security Alarm Systems Security Equipment

Thursday, October 21st, 2010

As electronic technology and microchip design advances, so too do security alarm systems security equipment. These systems can be purchased with features to accommodate a variety of different alarm and alert requirements for both residential and commercial applications, including auto dialing several different telephone numbers upon activation. Thanks to compact electronics and their simple design, these systems can easily be self-installed, set-up, and operated.

Most security alarms systems security equipment these days are component based systems. This means that each component can be made by a different manufacturer or differ in type and application yet work together as one unit to provide optimum security alarms and alert notifications.

Although alarms systems are designed to accommodate different situations based on each application, there are some common features for most systems. Two of the most common security alarms systems security equipment are the control panel and the sensor. Additional equipment may include keychain wireless transmitters, back-up batteries, and automatic dialers.

A security alarm system works by using sensors at various locations around the room, building, or property that is being protected. These sensors are connected in some manner to the master control panel, and are often referred to in the security alarm industry as “points” on the control panel. For example, an eight point master control panel has connections for up to eight different sensors. Depending on the system design, these sensors are connected to the control panel via a wire run from each sensor to the panel or wirelessly via a radio signal.

If the security alarm systems security equipment is the wireless type, each sensor will contain its own sensor, power supply, and transmitter. The power supply for these units is usually a small lithium ion battery (that may be rechargeable) with a long life (some units boast up to a two year battery longevity period). The transmitter is a small radio signal transmitter set to a specific frequency with a limited range.

Security alarm systems security equipment sensors are too numerous in type to list them all here, but there are two types that are used the most often. This includes a door/window magnetic switch sensor and a motion detector.

Door/window magnetic switch sensors are mounted on the edge of doors and window frames with a small, fixed magnet mounted on the edge of the door or window. As long as the magnet and magnetic switch remain within the magnetic field of each other, as when the door or window is in the closed position, the master control panel does not initiate an alarm response. However, if the magnet and magnetic switch are separated from each other outside the magnetic field, the sensor is “triggered” and the master control panel initiates whatever response it is capable of producing (alarm, alert, auto dialing or a combination of the three) based on the pre-programming conducted during the set-up of the system.

The motion detector is usually a Passive InfraRed or PIR sensor. This sensor can detect sudden changes in infrared radiation, such as when an object moves in front of another. When the PIR sensor detects this infrared radiation difference, it assumes that it was created by an object in motion (burglar, vandal, or some other object) and it triggers the master control panel to initiate a response.

Simple do-it-yourself alarm installations may contain as little as two window/door sensors and a motion detector. For example, an apartment with one door and one window could be configured with a sensor on each and a motion detector could be placed in a central location to the apartment rooms (such as a common hall). The window/door sensors provide protection from unauthorized entry and the motion detector would provide coverage from any other method of unauthorized entry.

In addition to these sensors security alarm systems security equipment sensors may also include:
• Water detectors (flooding);
• Temperature and/or humidity;
• Pool entry;
• Safe entry;
• Individual room or area (often called “zones”) encroachment;
• Gas detection (such as carbon monoxide); and,
• Smoke and fire detection.

Security Camera King offers a wide variety of security alarm systems security equipment and professional 24/7 monitoring. This includes digital video security cameras in addition to the alarm sensors so the system can not only alarm or notify for a programmed event, but can also document the event in progress and provide positive identification of the intruder(s). Contact our security experts for more information or to purchase yours today.