... transmitting channel testing4.PTZ controller CCTV Tester Features 1. 3.5"TFT-LCD , 960(H)×240(V)resolution. 2. ... DC12V 1A power output for camera 4. Audio input testing 5. Digital multimeter, voltage, current, resistance and capacitance can be tested, ... Security Tester PROVideo TestSignal modeNTSC/PAL (Auto adapt)Display3.5 inch digital TFT-LCD ,960 x 240 resolutionLCD adjustmentBrightness, Contrast, ...