... PTZ, generating images, capturing data of RS485 and tes Security CCTV tester2.5"TFT-LCD , 960H×240VresolutionColorbar Video ... 3.7V DC2800mAh), more reliable, and work 9 hours SpecificationMODELST89B-4 CCTV Security TesterLCD adjust Adjustable brightness, contrast, ... OutputVideo Output Mode1.0 Vp-pPTZ controllerCommunicationRS232, RS422 simplex and RS485PTZ ProtocolPelco-D, Pelco-P; Samsung, Panasonic, ...