With technology advancing everyday and new milestones being reached we often have to do an extensive amount of research before knowing exactly which product is right for us. When it comes down to surveillance technology and types of surveillance systems there are more than a few to choose from. You probably have heard the terms Megapixel, TV Lines, 960H, POE, BNC, Cat5e, 1080p and a slew of others that we won't mention but "What do they all mean and what is the difference between each?" We're glad you asked because all of these terms and almost all surveillance systems can be broken down into three main categories: Analog, IP, and CVI Analog systems are what began the surveillance industry and are still around today. They feature a low cost, low resolution, easy alternative to IP but with mixed results. Analog cameras are usually listed with an X number of TV Lines. You'll often see 600, 700, 800 TVL and occasionally 960H with the higher the number generally being the better choice. With the higher number being better you are ultimately limited to a maximum pixel count of 960x480 (960H) which is not high definition by any means. Analog DVRs and cameras are mostly interchangeable meaning you can mix and match cameras and DVRs from different manufacturers. However, this easy setup-low cost alternative comes with a few downfalls when compared to newer technology. Low limited resolutions provide a mediocre image which can often be pixelated and grainy. A maximum resolution of 960H is the highest possible or 960x480 to be exact. Think of a high definition 1080p TV with a resolution of 1920x1080, when comparing the two, 960H provides much less detail and quality. This often results in less arrests and convictions due to specific features not being distinguishable on captured video.