There are several types of CCTV cameras to choose from depending on your needs and environment, including wired, wireless IP, black and white, and color cameras. Wireless IP cameras connect to your WiFi like other devices and offer good audio/video quality. Black and white cameras perform better in low light conditions, while color cameras are suitable for indoor and outdoor use. A CCTV camera system requires a DVR recorder to save video footage to a hard drive. Buy a security system according to your requirements and budget after researching options online.