Golden 4.3" HD 720P1080P 3 IN 1 AHD TVI CVBS CCTV Tester ,CCTV Camera Video Monitor Tester With 12V Power Output,RS485 Control ,Power Supply to Mobile This is our salebale TVI+AHD +Analog tester,Supprt RS485 control ,but not support IP cameras High Resolution 4.3 "TFT - LCD,Smart Tool for CCTV system installation and maintenance Video test,cable test,audio test,suppy 12V /1A power output,very convenient when you go out 5V1A emergency power output,can charge for the mobile phone Compatible with CVBS camera and AHD &TVI (D1,720P, 960P,1080P) cameras