The Basics of Home Security Cameras

The Basics of Home Security Cameras

  • With today’s technology, the price of home security cameras makes them more affordable than ever for residential use. However, many people find it overwhelming to shop for a system because there are so many options for and acronyms that describe home security cameras. Don’t look at price, but look for the features you need for your situation to find the best deal and camera.

    Wired or Wireless?

    A wired camera is powered by a cable, which means that you have to install the wiring before positioning. The benefits of a wired system is that they are not subject to interference and have a higher security from hacking. However, the installation is more expensive and they are difficult to move. In addition, wired home security cameras tend to be a little larger than wireless cameras.

    Wireless cameras are operated through your Wi-Fi network or antenna and receiver. The biggest advantage of these cameras is that they can be placed just about anywhere, provided they can get the signal to the receiver. They are much smaller than wired cameras, but they will require a battery or other power source. Moving objects or radio transmissions in the area may interfere with the signal, and these cameras are easier to hack.

    Picture Quality and Resolution

    Resolution is the measure of a camera’s quality. TV Lines (TVL) ranges from 360 to 700, and the higher the number, the better the image will be when viewed. IP cameras use megapixels as the measurement of picture quality. Megapixels start at 1.3M and go up from there. One camera with 29M purports to catch a flea breaking and entering, but 3.0 – 5.0M should be sufficient for a home system.

    LUX is a measurement of illumination, and you may see it abbreviated as lx. This rating tells you how much light is needed for the camera to produce a picture. A lower rating means less light. A camera that has a 0.5 LUX rating can see an image in a dimly lit corridor or outside on a night with a full moon. A 0 LUX rating means that the camera uses infrared imaging to capture an image, because there is no available light. If you are using the camera in a low-light setting, there’s no reason to purchase a more expensive color camera. Go with a black and white, because the image will come through as if it were B/W.

    LOS, or line of sight, is the distance between the transmitter and receiver. Wireless signals can go through wood, trees, and non-steel walls, but the signal may be weaker. Placing the antenna in a higher location will improve signal reception.

    What Type of Lens?

    The other feature you need to consider is the lens. This is the field of surveillance view your camera will get. A fixed focal lens ranges in 2.8 mm to 100mm. Higher numbers translate to a more narrow, zoomed in view. Standard for home security cameras is 4mm which provides a 72 degree field of view over 30 feet. If you want to change the monitoring distance, a varifocal lens is a better option. With it, you can adjust the lens to move in or out.

    Before Purchasing

    Make sure to check with your local authorities for any regulations and ordinances that pertain to the use of home security cameras in your community, or just call Dynamark Security of Richmond for assistance. Whether you want to use them inside or outside your home, security cameras make your life a little safer when you’re at home or away, so definitely consider adding them as a layer of protection for your home.