Seesii Professiona ST893AHD Portable 3.5 inch Screen HD 1Mp 1.3Mp 5Mp Analog Camera 720P 1080p AHD AHD2.0 CCTV CVBS VGA Camera Test Tester Monitor PTZ Control 12V Output It can be used for displaying video signal from HD-AHD Cameras and CVBS analog cameras, Also controlling PTZ, generating images, capturing data of RS485 and testing LAN cable etc. It is easy to operate,and convenient portability enable it simple for the contractor to install and maintain the video camera,promote working efficiency and cost-down the expenditure of the project. DC12V power output to power for cameras Automatically identify and adapt the video mode of NTSC and PAL,Support more than ten kinds of PTZ controller protocols. For example, PELCO-P, PELCO-D, SAMSUNG etc