5 inch Screen Engineering Tester HD Video Surveillance Tester 1. High-definition video coaxial monitoring test instrument, supporting ADHTVICVI 2. CVBS video format, maximum support for 8MP high-definition video. Also has functions such as video display, RS485 PTZ control, DC12V power output, audio testing, VGAHDMI video signal input, network cable testing, coaxial line testing, LED light for night illumination 3. Built-in 3.7V 4000 mAh polymer lithium battery, one charge lasts for 2-3 hours, and can be used normally for 6 hours Product functions 1. Video signal testing function: high-definition video monitoring tester, with a built-in high-definition 5.0-inch 800(RGB)x480 display. 2. Pan-tilt control function: the video monitoring tester is equipped with Pelco-DP and other PTZ control protocols, and can control the pan, tilt, up-down, left-right movements as well as zoom, focus, and aperture size through the RS485 interface. 3. DC12V 1A power output function: the video monitoring tester is specially designed with a 12V 1A power output port for the camera's power supply. It provides a temporary power display screen and supports PALNTSC image signals. 4. Audio testing function: the audio testing function of the video monitoring tester can test audio devices such as microphones at the video monitoring front end. 5. Enhanced network cable and coaxial line testing function: Network cable testing function, through the UTP CABLE TEST port on the instrument, can test the continuity of network cables and coaxial lines, with a testing distance of 100-150 meters. 6. VGA input: supports VGA video input. When connecting a VGA video cable, please enter the menu to select the VGA mode. The resolution supports 1024x7681280x7201280x10241440x9001920x1080. 7. HDMI input: supports HDMI video input. When connecting an HDMI video cable, it will automatically switch to HDMI mode. The resolution supports 1024x7681280x7201280x10241440x9001920x1080. 8. TVI camera testing: TVI coaxial high