Posts Tagged ‘ security alarms’

Home Security Camera Motion Sensitive

Written By:
Monday, December 27th, 2010

One of the most effective residential digital video security systems is the home security camera motion sensitive. This camera not only conserves recording time and power resources put can effectively act as an alarm unit, only recording when motion is detected.

There are basically two types of home security systems, digital video security camera systems and security alarms (intrusion alarms). The home security camera motion sensitive combines the advantages of both systems into one by only recording video only when motion is detected. Not only does the owner benefit from digital video documentation of a potential criminal perpetrator inside the home, but if the system is connected to the internet, an email alert can be sent immediately to the owner’s smartphone notifying them of the intrusion.

If the home security camera motion sensitive is used outdoors, (i.e. is an outdoor type digital video security camera) it can also be used to notify the owner of the presence of someone on or approaching the residential property. Cameras of this type are commonly used on extended driveways or gated property/driveways. They can alert the homeowner of a visitor, long before the visitor arrives at a door.

The home security camera motion sensitive is a digital video camera with a built-in Passive InfraRed (PIR) sensor. The PIR scans the camera’s field of view for a differential in heat signatures, such as that caused by a person walking into the PIR and camera’s field of view. When the PIR detects the change in infrared radiation, it interprets this to indicate motion.

The PIR is connected to a relay inside the camera housing. When the PIR senses motion, it triggers the relay to turn the camera on and begin recording. The camera stops recording either when the PIR no longer detects motion or after a pre-programmed time delay. When the camera is battery operated, the PIR conserves battery life (or time between recharge cycles if the batteries or rechargeable) since the electrical drain caused by the PIR function is drastically lower than that needed for the camera to capture video.

There is also another type of home security camera motion sensitive system. The camera for this system is also on and capturing video images. However, the Digital Video Recorder (DVR) and Digital Signal Processor (DSP) are programmed to recognize changes in the video image of the camera’s field of vision. When this occurs, the DVR begins recording as long as the motion is detected. However, this system uses a non-motion sensitive camera and does not offer the advantage of power conservation as does the home security camera motion sensitive.

Residential digital video security systems are incredibly versatile in application these days thanks to improvements in camera, electronics, and computer technology. There are many additional optional features available for home security camera motion sensitive. The following is a list of some of the more common optional features available:
• Day/night vision cameras. These cameras are very sensitive to light such that they can still produce high quality color video in very low light conditions.
• Night vision infrared cameras. These cameras use infrared illumination which is invisible to the human eye to produce high-quality black and white or monochromatic video in total darkness.
• Outdoor cameras. These cameras are designed with a protective enclosure for the purpose of preventing damage to the camera from exposure to weather and other elements (dust for example).
• Wireless cameras. These cameras send their video transmission data using radio waves instead of cables. Using these cameras eliminates the need for an RG-59 coaxial cable to be run from each camera to the DVR. There are also battery operated cameras of this type creating a truly “wireless” camera.
• Internet Protocol (IP) ready cameras. These cameras contain built-in web server technology and can use the internet as a vehicle for networking. Furthermore, these cameras can be monitored anywhere in the world where broadband internet access is available (including 3G and 4G smartphones).
• Hidden or disguised cameras. Camera technology can produce such small digital video cameras that they can be hidden or disguised as another object.

The various features in addition to the motion detector makes the home security camera motion sensitive one of the most effective residential digital video security cameras. If you need more information on this type of camera or are considering a purchase, contact one of Security Camera King’s security experts via “Live Chat” or telephone today.


Security Alarm Systems Security Equipment

Written By:
Thursday, October 21st, 2010


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.