Start by choosing the type of video cameras you want to use and the locations where you'd like to mount them. The best location is typically under a roof eave or any other location where the sunlight won't directly hit the lens. The lux rating is the amount of light required to obtain an image. One lux is approximately the light from one candle at one meter. The number of lines determines the resolution of the camera.
Higher resolution makes it easier to distinguish fine details and recognize people at a distance.
Most standard TVs and VCRs have resolutions of less than 300 lines. Mount the cameras facing the direction you'd like to monitor. One of our most popular models, this camera is perfect for monitoring exterior locations. Each camera comes with 100 feet of cable. This model offers the same features as the 7544BNN and adds a built-in microphone to capture sound as well as video.