... TesterVideo TestSignal modeNTSC/PAL (Auto Adjust)Display3.5 inch TFT-LCD ,960 x 240 resolutionLCD adjustAdjustable brightness, contrast, ... , RS422 simplex and RS485PTZ ProtocolCompatible with more than 20 protocols such as PELCO-D/P, Samsung, Panasonic ... Humidity30%-90%Dimension/Weight112mmx189mmx47mm 3.5"inch TFT LCD CCTV tester monitor with PTZ control and optical multimeter