If you're just getting started on surveillance for your home or small business, it's a good idea to get a system that can expand as your needs grow. The 2.4GHz Wireless 4-Channel Color Camera System comes with a single color video surveillance camera, but this expandable wireless system can support up to four cameras (additional cameras are sold separately). Connect the receiver to your television or monitor, and maximize the range by rotating and pivoting the antennas on the transmitter and receiver toward each other. The 2.4GHz Wireless 4-Channel Color Camera System's receiver can connect to up to four cameras and switch among them manually or automatically, dwelling on each for a user-adjustable period of time. You can also add another receiver to monitor the cameras from more than one location in your home or business. Two AC power adapters are included to power the camera and receiver; for maximum ease of placement, the camera can also be powered by eight AA batteries (sold separately).