Closed-circuit televisions (CCTV) are video surveillance that use video cameras to transmit signals to specific sets of monitors. GAOTek offers a wide array of high quality and inexpensive CCTV and video related equipment such as multi-functional CCTV testers and color video quad processors for sale to the United States, Canada and Globally.

Multi-functional CCTV testers are used for on-site maintenance or installation of IP cameras, analog cameras, network devices, video displays, PTZ controls, audio tests, and color generators. Some of this equipment can have unique functions such as POE power supply testing, PING testing, IP address scan, video screenshot, video record, image magnification, port flicker, cable search, and LED lamp.

The color video quad processor system allows the users to control the video output using different display modes such as quad split, full screen, PIP (picture in picture), dual-screen, image motion detection, independent adjustment, video parameters, and auto sequence.