The Mydeltapi Webstore - security products



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Back to main menu of all types or products: Hobby, automotive, fashion, health, electronics

All kind of car equipment

Electronic equipment and electronic building kits

Some good shops of car equipment and Links to other interesting pages: natural medicines, erotic products, clothes, jewelry, watches, electronics, rc models of all kind



Security products for houses, cars, persons, pets, properties and workplaces

Welcome to this presentation  of security products, like: Centrals, detectors, transmitters, receivers and alarms. Pleace click on a link to read more or by. By clicking at any link you will find many more security products and car equipment than those exhibited on this page.


Online security equipment stores

Security systems for houses, garages, driveways and properties with integrated alarm for burglary, fires and other threats

Detectors for dangerous susbstances like radon, methane, combustibles, carbon monooxide, exhaust gasses and for humidity and water leaks

Cameras, detectors and other single modules

Personal security and protection

Vehicle security systems

Security boxes, saves, bags and cargo holders

Special instruments for spying, inspection and surveillance

Heavy duty and industrial survaillance equipment

Fire estinguisher, fire and smoke alarms and fire saves



Good online stores with security equipment

Lorex - electronics for surveillance and alarm for homes, workplaces, garages, outdors, persons and pets - Here you can find total surveillance and tracking systems and individual components like wireless and wired cameras, IP cameras, motion detectors, detectors of tresspassing, fire detectors, voice detectors, sentral consoles for security systems, security video minitors, surveillance data disks, pet monitors, baby monitors and much more.

Lorextechnology.com



Miniinthebox - security equipment and much more for very affordable prizes - This is a general store where you can find all kind of technical products and products for personal use. This store has a lot of electronic equipment for personal security, home security, vehicle security and workplace security. It carries products useful for private citizons security personal and people amployed in law enforcement units. You find equipmant like: Surveillance systems, security cameras and audio monitors for overt or hidden placement, wireless tracking devices, burglery and emergency allert devices, IT security and protection against computer spying, car cameras and allarms, biometric locks, phone recording, systems for home security, self defence equipment, scopes and other optical equipment.

Sale



Auto Barn - vehicle equipment, including secyrity products - This is a general car equipment store. It is well equipped with security products for cars, garages, driveways and even homes and workplaces. Here you find all kind of driving security and vehicle security products, like: Surveillance cameras and systems, allarms against burglery and trespassing, GPS tracking equipment, backup cameras and allarms, detection of gas and exhaust leak, security locks, fire allarms and estinguishers, cargo security and much more.

Auto Barn - Shop on-line at our 5-Star Rated Site



West Marine - Boat equipment, including security products for boats - This is a great store of boat equipment. Among other things you find equipment for allarming about fire and for estingusishing fires, equipment for surveillance, leakage allarms, radar systems, life wests and life boats, and of course all other kind of salvage equipment

Shop West Marine!

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Electronic security systems for houses and properties

Lorex - A good place to find surveillance and alarm systems for houses, properties, persons and belongings, and all kind of components like cameras, detectors, monitor screens, sentral hardware and software

Lorextechnology.com



Some products examples. By going through the above banner, you can find many more products too

Home surveillance system with 2 wireless cameras

Home surveillance system with 2 wireless cameras

Wireless home monitoring system with LCD picture frame monitor, two cameras, motion activated recording, and 2-way intercom communication




Home security surveillance system

Home security surveillance system

Security camera system, Internet Remote Viewing, 8 Channel DVR With 4 Day/Night Color Cameras And 500 GB HDD




Camera security surveillance system

Camera security surveillance system

Camera security surveillance system with outdoor wireless cameras




Surveillance camera security system with 12 night security cameras

Surveillance camera security system with 12 night security cameras

24" Led monitor, H.264 High Performance, Internet Remote Viewing, 16 Channel Security Camera System With 12 Day/Night Color Cameras And 500 GB HDD




Security camera surveillance system with 16 outdoor cameras and monitor

Security camera surveillance system with 16 outdoor cameras and monitor

16 camera security system - Security camera surveillance system with 4 dome and 12 bullet cctv security cameras




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Security detectors for dangerous substances like radon, combustibles, methane, carbon monooxide, exhaust leaks and the like

Good places to find security detectors for leaks or intrusions of substances that can cause harm or be dangerous



Auto Barn - Shop on-line at our 5-Star Rated Site



Some of the products you can find. More detector products are to be found by going through the banners above

Dri-Eaz Protimeter SurveyMaster Moisture Meter

Dri-Eaz Protimeter SurveyMaster Moisture Meter

Easily detect and measure the moisture levels in drywall, wood, carpeting, and a variety of other surfaces with the Dri-Eaz SurveyMaster Moisture Detector. With both pin and the non-invasive search mode of operation, it?s the one stop meter for all your moisture detection needs. Easy to use and with durable construction, it?s built with the restoration professional in mind.




Honeywell Lyric Wi-Fi Water Leak & Freeze Detector

Honeywell Lyric Wi-Fi Water Leak & Freeze Detector

Protect your home from damage caused by water, severe temperatures, and rising humidity 24/7 with the Honeywell Lyric Wi-Fi Water Leak Detector. If a problem occurs, no matter where you are you?ll be instantly notified directly on your smartphone or tablet. By adding additional cable sensor rope extensions, you can monitor larger areas like garages or basements.




Viking AquaSensor Moisture Detector

Viking AquaSensor Moisture Detector

Designed for use in water damage restoration projects, the durable Viking Aqua Sensor Moisture Detector helps you check for moisture in carpet, drywall, and wood. It has a 30-inch reach, allowing you to test surface without putting stress on your body. It provides fast and accurate results.




Safety Siren HS80501 Pro Series Propane/Methane Gas Detector

Safety Siren HS80501 Pro Series Propane/Methane Gas Detector

Protect your home, business, or other facility from explosive levels of methane or propane gas. This plug-and-go detector samples your air continuously and alerts you with audible and visual alarms if unsafe natural gas levels are detected. Plus, it features a reliable self-diagnostic testing system to ensure proper operation round-the-clock.




Safety Siren Pro Series Multigas Detector

Safety Siren Pro Series Multigas Detector - carbon monoxide methane and propane gas

Monitor the safety of your air quality with this 3-in-1 multi-gas detector. The unit detects the presence of carbon monoxide methane and propane gas. Plug it into any standard electrical outlet and every 2-1/2 minutes the Safety Siren Pro Series Combination Gas Detector will sample the air for these harmful gases.




Combustible Gas Detector - Natural Gas

Combustible Gas Detector - Detects multiple gasses as listed

The NGD268 is a combustible gas detector that detects all combustible gases including natural gases making it ideal for industrial uses, HVAC, plumbing and plant maintenance. Detects Methane, Natural Gases, Coal Gases,Hexane, Propane, Ethane, Butane, Pentane, Isopropyl Alcohol, Halogenated Hydrocarbons(Methanol, Ethanol, Butanol), Ether, Ketones (Butone, Protone), Hydrogen, Toluene, Gasoline,Industrial Solvents, Lacquers, Refrigerants,Sulfur Dioxide, Ammonia, Sulfured Hydrogen,Acetic Acid.




Pocket Size Combustible Gas Leak Detector

Pocket Size Combustible Gas Leak Detector

Detects combustible gases: Methane, butane, propane, gasoline, diesel and kerosene. Four peak levels: 1000, 2000, 4000 and 5000ppm.




Safety Series Radon Gas Detector

Safety Series Radon Gas Detector

The Pro Series3 Radon Gas Detector is the only radon gas detector on the market designed for use by...




Safety Siren Combustible Gas Detector

Safety Siren Combustible Gas Detector

Detects dangerous levels of Methane Butane and Propane Computerized calibration.




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Cameras, detectors and other modules for surveillance systems

Lorex - A good place to find cameras and monitors for surveillance systems and cameras and dectectors that can work alone or can report to a PC or cell phone, and to find complete systems to excert security

Lorextechnology.com



Some products examples. By going through the above banner, you can find many more products too

Wireless IP camera

Wireless IP camera

Lorex Live Ping Wireless IP camera for internet remote viewing with iPhone iPad, Android, PC and MAC.




HD IP camera with night vision

HD IP camera with night vision

The LNB3153BW is a security camera for home or business that features smooth 1080p HD video and outstanding night vision capability.




Outdoor HD Dome IP Camera 1080p

Outdoor HD Dome IP Camera 1080p

A 1080p HD IP security camera, with an IP66 weatherproof rating and featuring outstanding night vision.




HD 720p Wireless IP Camera with Pan-Tilt (2-Pack)

HD 720p Wireless IP Camera with Pan-Tilt (2-Pack)

HD 720p wireless network security camera 2-pack, featuring remote pan-tilt, for indoor home or business security monitoring.




Indoor/Outdoor Security Camera with Motorized Lens

Indoor/Outdoor Security Camera with Motorized Lens

A bullet style HD IP security camera, featuring a motorized varifocal lens for easy adjustment.




Outdoor security camera varifocal vandal domes - 4 Pack

Outdoor security camera varifocal vandal domes - 4 Pack

The outdoor security camera is equipped with super resolution Sony HAD™ II image sensor that allows to see with exceptional sharpness, clarity.




Outside security camera dome with night vision

Outside security camera dome with night vision

Super resolution 600tvl outdoor dome camera with infrared night vision, advanced image sensor and wide angle lens. Ideal for home security




Streetwise Security Products DC1600 Dummy Camera Indoor/Outdoor Housing With Motion Detector

Streetwise Security Products DC1600 Dummy Camera Indoor/Outdoor Housing With Motion Detector

Now you can deter robbery and theft and vandalism without the high cost of a real outdoor security camera. When placed outside your home or business even the most sophisticated criminals will think the premises is guarded by a hightech surveillance system and go in search of an easier target.




Mini Gadgets HS1450CCD Wireless Audio/Video Camera

Mini Gadgets HS1450CCD Wireless Audio/Video Camera

No matter how hard you try its just not possible to be every place all the time. And some places you dont even want to be though you must find out whats going on there. Thats where this nextgeneration wireless device comes in; it looks and listens where you can t. The wireless audio/video camera runs on 12 volt DC power and has a night vision range of 15 meters.




Shopzeus USA zeusd1COST5957063 iTouchless 11gallon Stainless Steel Motion Sensor Trash Can

Shopzeus USA zeusd1COST5957063 iTouchless 11gallon Stainless Steel Motion Sensor Trash Can

This new generation automatic trash can has improved sensor sensitivity to prevent accidental opening and a mechanically superior lid opening mechanism for longer lasting more durable operation. Uses standard 13 gallon trash bags. Comes with bag retainer ring to secure and hide the bag inside the trash can. . Capacity: 11Gallon. Material: Stainless steel. Finish: Brushed silver. 100 Handsfree operation. Removable top cover for easy cleaning.




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Security electronics for vehicles and garages

Good places to find security electronics and mechanical security products for vehicles and garages

Auto Barn - Shop on-line at our 5-Star Rated Site



Vehicle security product examples. By going through the banners above, you can find even more vehicle security products

Livewire GPS Vehicle Tracker

Livewire GPS Vehicle Tracker

The Ultimate in Professional Vehicle Tracking The Livewire is a completely covert GPS tracker that easily installs to a car's power source. With 30-second location updates and an external antenna to maximize performance, this powerful hidden car tracker puts you in total control of individual vehicles or fleets - and drivers will never know it's there unless you tell them. Perfect for tracking fleet vehicles, this best-in-class GPS device features improved accuracy, and it's designed specifically to make locating and routing vehicles as simple as possible.




TrackPort 2.0 GPS Vehicle Tracker

TrackPort 2.0 GPS Vehicle Tracker

The new and improved TrackPort 2.0 is the easiest way to track a car or truck without worrying about battery life. Just plug the device into your cars OBD-II (On Board Diagnostic) port. Normally located under the drivers side dash, this port has been standard on all vehicles sold in the United States since 1996. Use your vehicles existing port to supply uninterrupted power to your tracking device.




TrackPort GPS Vehicle Tracker

TrackPort GPS Vehicle Tracker

Always know for sure exactly where your vehicle is. The TrackPort is the easiest way to track a car or truck without worrying about battery life. Just plug the device into your cars OBD-II (On Board Diagnostic) port. Normally located under the drivers side dash, this port has been standard on all vehicles sold in the United States since 1996. Use your vehicles existing port to supply uninterrupted power to your tracking device. Switching cars? Unlike traditional hardwired tracking devices, an OBD GPS tracker can be easily moved from one vehicle to another with no tools and no effort. Its completely "plug and play." Why TrackPort? No installation required.




Yada Backup Camera Expandable System

Yada Backup Camera Expandable System

Backup Sensors & Backup Cameras by Yada. Yada Backup Camera Expandable System Features - Get a better idea of what lies behind with the Yada Backup Camera Expandable System. Backup Camera Expandable Systems install easily with no splicing required. Large 5" dash mount monitor receives images wirelessly from the backup camera. Innovative monitor allows for single or split views with the addition of another camera (sold separately). Weatherproof camera boasts night vision & wide-angle lens for visibility in all conditions. Yada Backup Camera Expandable System - FREE SHIPPING. For the top selection of Yada Mobile Electronics shop online today.




Pyle PLCMTR104 Weatherproof Rearview Backup Camera & Monitor Video System

Pyle PLCMTR104 Weatherproof Rearview Backup Camera & Monitor Video System

WEATHERPROOF REARVIEW BACKUP CAM SYST W/ 10.1IN LCD COLOR MNTR




4.3

4.3" TFT LCD Monitor Car Rear View System Backup Reverse Camera Kit Night Vision

Night Vision Function:Yes; Wide Angle:120; Video System:PAL; Power Supply:12V DC; What's in the box:Rear View Camera




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Personal security and protection

Products for protection of yourself, your family and your assets when you are out walking, in your home or travelling: Airsoft BB Pistols, Animal Repellents Articles, Board Cameras, Bug/Frequency Detectors, Bullet Cameras, Child Safety, Complete Security Systems, Diversion Safes, Dome Cameras, Fake Security Cameras, Hidden Camera and Audio Detectors, Home Security, Instructional Fighting DVDs, IP Cameras, Knives, Mace Defensive Sprays, Metal Detectors, Monitors, Pepper Spray, Personal Alarms, Professional Cameras, Quads, Safety Lights, Sporting Goods, Spy and Surveillance, Stun Guns, Super Saver Packages, Tasers, Video Recording


Miniinthebox - A good place to find personal security devices and any other type of techical device

Sale


Lorex - A good placeto find baby monitors, pet monitors and any other kind of monitor devices

Lorextechnology.com



Some products examples. By going through the above banners, you can find many more products too

1-Video infant monitor with 4 cameras

1-Video infant monitor with 4 cameras

Safe and stylish video baby monitor solution with night vision, a "talk-to-baby" intercom and audio activated alerts




Baby video cameras with monitor, PT camera

Baby video cameras with monitor, PT camera

Wireless monitor and baby video cameras, remote Skype viewing, and video recording




Sweet Peep mini Video Baby Monitor

Sweet Peep mini Video Baby Monitor

Video baby monitor with mini wireless camera




iPhone baby monitor

iPhone baby monitor

See by monitor reviews for Lorex wireless IP camera for internet remote viewing with iPhone iPad, Android, PC and MAC.




Baby Monitor Camera

Baby Monitor Camera

Additional camera for the BB7011 video baby monitor.




Mini GPS Tracker Locator for Kids Child Pet Cats Dog Car Vehicle Personal Google Map SOS Alarm GSM GPRS Tracker

Mini GPS Tracker Locator for Kids Child Pet Cats Dog Car Vehicle Personal Google Map SOS Alarm GSM GPRS Tracker

No Description




LEKEMI Mini GPS Tracker for Kids Child Pet Car Vehicle Personal Google Map SOS Alarm GSM

LEKEMI Mini GPS Tracker for Kids Child Pet Car Vehicle Personal Google Map SOS Alarm GSM

Dimension(cm):3812mm; Net Weight(kg):0.03kg; Material:Plastic,ABS; Dimensions (cm):38(d)12mm; Weight (kg):0.03kg; Type:Bluetooth Car Kit; Connection:Mini USB; Application:Motorcycle,Truck,Car




Personal GPS Tracker with Weather Information

Personal GPS Tracker with Weather Information

Simplified GPS interface and digital weather info on a keychain-sized unit to easily find your location and weather information.




LMP X0134D DVD Basic Self Defense volume 1

LMP X0134D DVD Basic Self Defense volume 1

Ken Hackathorne Bill Wilson and Lenny Magill cover the basics: grip stance sight picture/ sight alignment and trigger pull. You ll learn both the classic Weaver stance and the Isosceles stance along with variations that will enable you to shoot fast and accurately. Plus complete information on selfdefense the importance of dryfire practice and how to be prepared for reallife situations Being safe in the modern world is a reality that we must all face. This shows you how to do just that. 60 minutes.




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Security boxes and cargo holders

The exhibited items are only examples. By clicking at the links, you will find complete product series, and complete equipment collections for the different systems.

Smittybilt Security Storage Vault

Smittybilt Security Storage Vault

Cargo Organizers by Smittybilt. Smittybilt Security Storage Vault Features - Install a Smittybilt Security Storage Vault and kiss your Jeep storage and security woes goodbye. Custom-made for your specific Jeep from 16-gauge cold-rolled steel. Robust drawer construction offers ultimate security-can support up to 350 pounds. High-quality steel slides provide years of smooth, quiet operation. Equipped with a positive stop to keep drawer closed when driving. Smittybilt Security Storage Vault - Smitty Storage Box. For the top selection of Smittybilt Travel Accessories shop online today. The Smittybilt Security Storage Vault - Smitty Storage Box will improve and personalize your vehicle. Cargo Organizers by Smittybilt - selected by many auto enthusiasts in the top automotive discussion forums. Smittybilt Security Storage Vault for your vehicle will deliver the results you are looking for! Smittybilt Security Storage Vault - Travel Accessories - Cargo Organizers.




Home Office Electronic Digital Security Safe Box Gray

Home Office Electronic Digital Security Safe Box Gray

Home Office Electronic Digital Security Safe Box Gray




CPU Security Cabinet - System Security Cabinet - Light Gray

CPU Security Cabinet - System Security Cabinet - Light Gray

Lock down your computer's CPU preventing access to the computer's CD and disk drivesSlide-out tray for easy access to the CPUPlenty of vents to prevent heat buildupCable grom




Carl Brands 88650 12 Wide Security Box With Dual Lock Removable Cash/Coin Tray Steel Blue

Carl Brands 88650 12 Wide Security Box With Dual Lock Removable Cash/Coin Tray Steel Blue

Color: Steel Blue. 12 Wide Security Box with Dual Lock. With a dual lock consisting of a cylinder key and dial combination lock. Lock Type: Tubular Key. Material(s): Steel. Outer Width: 12 .




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Special instruments for spying, inspection and surveillance

By entering through these links you will find more variants of these product types.

Compact Inspection Camera with 2.4

Compact Inspection Camera with 2.4" LCD Monitor and 9mm Camera Head

Lightweight, compact inspection camera is ideal for inspecting and troubleshooting in hard to reach and access areas. Useful for seeing behind or inside walls, in duct work, under appliances, for car repair and much more. Handheld camera has an attached 2.4" TFT-LCD monitor and a mini water-proof camera with a 3' flexible extended tube. Mini-camera has a waterproof level of IP67.




Maxivideo?MV208 5.5mm Digital?Inspection?Camera 2.4 videoscope

Maxivideo?MV208 5.5mm Digital?Inspection?Camera 2.4 videoscope

This premier Autel MaxiVideo MV208 digital videoscope is an ideal tool for examining difficult-to-reach areas normally hidden from sight. It features the ability to record digital still images and MPEG2 or MPEG1 video either on its internal flash memory(100MB) or on your own micro SD cards. The ergonomic tool not only features a 2.4 full color LCD screen, auto focus and viewing capacity as close as 1; with crystal clear output, but also offers the capability to stream digital video directly to a PC. The multipurpose videoscope is an economical solution to inspect machinery, facilities and infrastructure in the safest, quickest and most cost-effective manner possible.




802AJ Wireless Inspection Camera with 3.5inch Monitor

802AJ Wireless Inspection Camera with 3.5inch Monitor

This Wireless Inspection Camera with 3.5inch Monitor allows for easy visual inspections in hard to reach areas, 3.5 TFT-LCD wireless recordable monitor with rechargeable Li-battery. Good choice for you!




Mini Drone RC Helicopter Spy Camera HD Easy To Fly Heli

Mini Drone RC Helicopter Spy Camera HD Easy To Fly Heli

Mini Drone RC Helicopter Spy Camera HD Easy To Fly Heli




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Heavy duty surveillance units and systems

Here are some examples of video surveillance systems, including systems accessable through internet. By clicking at these links you can find many more survaillance systems and units for surveillance systems like cameras and trasnmittors.

ZMODO KDF8DASCZ4ZN CDATA  8 Channel CCTV H.264 Real Time Surveillance DVR Outdoor Security Camera System  3G Mobile View No HD

ZMODO KDF8DASCZ4ZN CDATA 8 Channel CCTV H.264 Real Time Surveillance DVR Outdoor Security Camera System 3G Mobile View No HD

Based on an embedded Linux operating system this fully integrated 8 channel security DVR included in this DVR Camera System is capable of versatile functionality including video/audio input/output motion detection 3G Remote View network access PTZ control and USB2.0 backup. The standalone DVR records realtime video at CIF (352 x 240) for 30fps frame rate on every channel. This real time H.264 DVR is your perfect choice for home and small business. With these four outdoor CCTV cameras in this package you can monitor the people and places you care about most. Featuring imaging provided by a 1/4 Sony CCD image sensor with 24 built in IR LEDS this weatherproof CCTV camera delivers crystal color video image in daylight as well as black and white video in darkness up to 65ft away.




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Links to sources of car equipment and other interesting products

Spare parts, building parts, performance parts and equipment for your car - By clicking at the banners below, you will find all types of technical parts or styling parts to repair your car or to build up your car to a greater performance and style. You can shop car parts by type, by car model or by part producer. Just click at one of the banner and fetch the part with the exact specification you want.

The Dealer Alternative for Auto Parts


Interior and exterior equipment for your car, styling parts, car electronics, GPS navigation. Also performance parts - By clicking at the banner below, you will find a great collection of styling parts, comodities for your car, or comodities to bring with you on tours. You will also find car audio and video, GPS navigation tools and communication electronics.

Shop Auto Accessories at AutoAnything!


Comodities for your car - By clicking at the banner below, you will find a great collection of comodities for your car, or comodities to bring with you on tours, lke  tools, lanterns,  Auto radio / stereo / music, communication electronics, security equipment, nevigation equipment, interior commodities, bags, seat equipment and more.  There are also repair parts and performance parts.




Links to some other interesting pages

Back to main page - rc models and hobby, car equipment, natural drugs, fitness, jewelry, watches, computers, cameras, telescopes, science kits, microscopes, energy solutions, erotic products and much more

To find more information about clothes and a greater exhibition of bags, backpacks and luggages

Remote controle models of airplanes

Remote controle models of cars

Remote controle models of ships and boats

Remote controle models of helicopters

Airsoft guns of all types

Natural drugs to fight common health problems

Drugs and tools for men and women to increase sexual satisfaction and potency

Beautiful jewelry and quality watches

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SOME GENERAL PRINCIPLES ABOUT SECURITY

Here are certain general principles of security. The principles are valid for any type of threat, such as fire, burglery, stealing of information, inuring program and data om PCs and servers, personal threats and so on. A total security strategy has the following aims.

1. To detect or recognize a threatening object, person or event, and distinguish it from non-threatening objects, persons or events.

2. To recogize what the threateing item aims at doing. Examples can be: Physical damage, personal attack, stealing of goods, stealing of information, destruction of information, disruption of business operation, etc.

3. To avoid a recogized threat to break through is a first objective when a threat has been recogized.. However, this is not allways totally possible within possible costs and practical conditions. Secondary aims are therefore:

4. To have public or private second-line aiding resources standing by, for example security guard companies, police, fire-guards or fire-department, and having means to allarm those resources.

5. To allarm aiding resources before the process off braking through begins. Such allarms should be authomatic if great values are in stake, but it must also be possible to contact them through telephone.

6. To slow down the break-through so long that the aid manages to come to assistance before the break is completed.

7. If the threat manages to break through and effect damage, there should be reserves in place that reduce the consequences of the damage to an affordable level. Reserves can be: Backup of data and programs, reserve computers or other machines, electricity generators, reserve hosting comodities. Instead of having physical resources at the place, contracts with backup delivering companies, and contracts about delivering spare equipment hithin a certain time limit, can be an althernative.

7. As a last line of resistance,  you shoud have adequate insurance coverage, that will replace lost items and profit after damage. Insurance can be expensive. Therefore a full scale insuranse is not necessarily the right thing. However, the insuranse should be of such a scale that you can live along in a comfortable manner. and so that your business can carry along, also after the damage.

There is also an economical side of security. The security system must not be so expensive that it costs more than the averidge cost of expected attacks that it hinders. More precisely: The sum of the security cost pluss the expected damages that are not avoided, should be minimized.

The security measures must be in order, everybody using them must know about them, must know how tu use them and must find them when needed. The measures should also be comprehensive. There should not be any holes in themeasures.  This includes telephone numbers to the police, the fire department, ambulance and engaged securyty guard comapies, Therefore:

1. All security measures must be clearly marked so that they easily are found when needed.

2. Every person must have got instruction in using the security measures.

3. When installed the mesures must be tested and must be retested at regular intervals.

4. People at the plase must have exercises in using the security mesures, where the responce of the people together with the measures themselves are tested.

5. The security measures must cover the whole area of interest.

One must make it clear to anyone planning to brake in or do sabotage that there are measures in place. However, it is usually not wise to indicate for them exactly where the measures, such as detecors an the like are placed.

 

About electronic detectors in security systems

An allarm system or an authomatic security system must have detectors placed on strategic positions in order to release an allarm or a counteraction. Detectors recognize some physical change in the surroundings and send a signal to the security system if some physical parameter exceeds some value. The system then realeases the alarm or action.

In advanced syetems, the detector may measure values of some parameters all the time and send all values of the parameters to the central unit. The unit then intrepretes the values and releases allarm or action if the values satisfy some set logical criteria.

There are many types of detectors, depending upon what type of physical parameter they recogize or measure.

- Vibration detectors react if there occur vibrations in the surroundings. They are typically used in burglary allarms. A vibration detector is typiclly placed at a door or a window and detect attempts to breake in at an early stage.

- There are detectors that recogize breakage in windows, doors or building contsructions. An example is current lines that causes a current interruption in a surcuit by breakage. This is a common type of detector used in burglary allarms. Such lines are often integrated in windows or doors.

- Infrared detectors measure the amount of infrared radiuation in the surroundings. Usually such detectors are used to detect fire.

- Some detectors recogize changes in the light intensity in a room. A subtype of these detectors have a unit emitting infrared light and fluctuation in the pattern of infrared light is detected.  Such changes can then be interpreted as people in motion in the room and be used in burglary allarms.

- Some detectors recogize the componets in smoke, either smoke particles or gasses.

An example of smole detector is Ionic chamber smoke detectors. These have an electri curcuit where the current must pass an open chamber. Through the chambers alfa-rays emitted from a piece of the redioctive material americium 240 are sent. The rays ionizes the air in the chamber and allow a small current to go through the curcuit. When smoke comes into the chamber, the ions are neutralized by gasses and the current in the circuit is broken.

A photoelectric smoke detector have a light source and a light detector positioned at 90 degrees angle to each other. When smoke enters, the particles in the smoke wil reflect the light and some of it will hit the light detector.

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