Today’s technology has made setting up security precautions such as security cameras a cinch! You no longer need to be a millionaire to set up one. You could even install one yourself! Security cameras provide a means for its owner to watch over his or her propery from the safety and convenience of any area he chooses. This type of system is a great deterrent to thievery and unwanted entry. Most organizations that have sensitive items or are off limits to the general public employ these cameras to help keep their places safe.
Purchasing and implementing such a system may save your business from the terrors of illegal entry. Investment in such could save you a whole lot of trouble.
Before purchasing a system, you will want to consider the following factors.
Study your needs. The type of security measures installed will depend on your specific security needs. For example how large is the area you would like covered? How many cameras will it take to monitor this area? You must make sure the security camera system you will purchase can accommodate enough slots for expansion.
Do you need audio too? Some camera systems have audio recording equipment as well so you can not only see what happens, but hear it as well. This is important in cases when you would like everything documented. However, this may be costly. Many establishments only require video records of their security.
Also, you must ascertain whether you need to have your security cameras record in color or black and white. Color cameras are, of course, more sophisticated and show a clearer picture. However, they tend to be pricey. Color cameras might also not work in low-light situations.
Consider the location of the cameras. Will the location be hard to set up a wiring system in? In that case, you may want to consider wireless security camera systems. However, these cameras must be in a place that is conducive to high quality broadcast. There must be no interference. They can, though, be moved around the area. They are a bit more flexible than their fixed-wire cousins.
Will the camera system be for outdoor purposes? Cameras that monitor outdoor locations need special weatherproof housings and may not be recommended for extreme temperatures and various elements. Also those that may be vandalized must be protected against such.
Also, you must take in consideration the lighting for an area. If your camera cannot record a scene due to bad lighting, you will end up with muddy images that won’t help in your surveillance activities. Choose a security camera that has a good sensitivity to light. Also, try to illuminate such areas with external lighting.
You must consider where the power sources will be located. Make sure they are well protected against the elements and from tampering.
Consider the available methods for recording the images. You may use a variety of backup media. And with the advent of computer storage media, even the use of hard disks, compact discs, and DVDs can prove to be an inexpensive way to store your data.
Installing a Security Camera System
Most home security cameras require little wiring, but installation differs according to model. Here are the basic steps:
1. Survey the area to be monitored. Follow the instructions/manual that comes with your security camera product. Install the camera at a proper distance from the area to be surveyed. Cameras vary in the distances from which they focus, so it would do well to pay notice to such.
2. Secure the camera using proper mounts, etc. Make sure that if the camera you are to install should not be moved, its placing should be secure and tamper proof.
4. Connect the camera to the monitor according to the manufacturer’s directions. Make sure the wiring is as hidden and as secure as possible. This will make it harder for vandals and thieves from damaging your wiring.
5. Fine tune your system. Make sure you optimize the images you receive from the camera. Set a maintenance plan and fail safe plans to employ in case your cameras break down.
6 Organize an archival system according to your needs. Backing up and recording your images are implemented here.
A combination lock is a type of lock in which a sequence of numbers or symbols is used to open the lock. The sequence is usually a specific permutation rather than a true combination. The sequence may be entered using a single rotating dial which interacts with several discs or cams, or by using a set of several rotating discs with inscribed numerals which directly interact with the locking mechanism.
Multiple-dial locks
One of the simplest types of combination lock, often used in low-security situations is the bicycle lock, which uses several rotating discs with notches cut into them. The lock is secured by a pin with several teeth on it which hook into the rotating discs. When the notches in the discs align with the teeth on the pin, the lock can be opened. This lock is considered to be one of the least secure types of combination lock.
Opening a multiple-dial lock without the combination depends on the slight irregularities in the machining of the parts. Unless the lock is machined precisely, when the pin is pulled outward, one of the teeth will pull more strongly than the others on its corresponding disc. This disc is then rotated until a slight click is heard, indicating that the tooth has settled into the notch. The procedure is repeated for the remaining discs, resulting in an open lock, and a correct combination, in very little time.
Single-dial locks
Combination locks found on padlocks or safes may use a single dial which interacts with several parallel discs or cams. Customarily, a lock of this type is opened by rotating the dial clockwise to the first numeral, counterclockwise to the second, and so on in an alternating fashion until the last numeral is reached. The cams typically have an indentation or notch, and when the correct combination is entered, the notches align, allowing the latch to fit into them and open the lock.
Combination locks of this type are generally more secure than the multiple-dial lock, but some of them do have weaknesses. For example, early combination padlocks made by Master lock could be cracked by pulling on the shackle of the lock and turning the dial until it stopped; each numeral in the combination could be revealed in this manner.
More recent models of Master padlock with a 40-position dial have a mechanical weakness that can give away the last numeral in the combination, and the first two numerals have a mathematical relationship with the last number. This weakness reduces the number of possible combinations from 64,000 to a mere 100, which can be tried in a relatively short amount of time.
Inexpensive padlocks are often susceptible to the use of a padlock shim, which can be used to release the shackle without entering a combination.
Other designs
Many doors use combination locks which require the user to enter a numeric sequence on a keypad to facilitate entry. These special locks usually require the additional use of electronic circuitry.
The main advantage of this system is that if used for the door of a large office, each employee can be told the code number without having to supply a key to each person.
The disadvantage however, is if the code number is discovered by someone out site the desired group or is not changed regularly, it could allow easy access to a potential intruder.
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