4.3" TFT LED Portable Network Cable Testing Monitor CCTV Camera Installation Detection System Security Tester for Surveillance Audio Video Input with OSD Menu

Features:4.3-inch TFT LED display screen, automatically identify and adapt PAL/NTSC standard.OSD menu, multifunctional interfaces and network cable testing capabilities.Adjustable brightness of screen, 5V USB charging and low power warning.Audio and video input.Built-in 3.7V 2600mAh Lithium battery, the work time can reach almost 8 hours.12V 0.5A output power, can be used as a power supply for a camera temporarily.Audio testing function, testing voice of the front end device is normal or not.If there is no video, it would turn to sleep mode after 3 minutesthen you can switch in video to wake it up.