Bigbig_top Portable Hand-Held 3.5" Color LCD CCTV Security Camera Video Test Tester Detector RJ45 This 3.5" TFT LCD CCTV Camera Detector is a best system equipment for installing and inspecting engineering. Camera quality inspecting; image of installation correcting; inspect and repair of monitor system, this inspection camera will help solve problems very easy. It is lightweight, handheld design and easy to be carried and operated! lt's convenient for video equipment that helps communication and discussion with clients during installation process. Through DC power out enables user to inspect, correct camera or confirm installation.