... RS485,PTZ CCTV CAMERA TESTER 3.5-Inch TFT LCD CCTV TESTER PRO With High Stability Digital Multimeter MODELSC ... modeNTSC/PAL (Auto adapt)Display3.5 inch digital TFT-LCD ,960 x 240 resolutionLCD adjustmentBrightness, Contrast, Saturation adjustableVideo ... controllerCommunicationRS232, RS422 simplex and RS485PTZ ProtocolCompatible with more than 20 protocols such as PELCO-D/P, Samsung, Panasonic, Lilin ...