CCTV Tester: 2.8"TFT-LCD, LCD Brightness/Contrast/ ... HK-TM801 1) CCTV system installation and maintenance 2) Dome camera and All in one camera testing ... ) The CCTV transmitting channel testing 4) PTZ controller 2.8"TFT-LCD , 960H×240Vresolution Adjustable brightness, contrast, ... Security TesterVideo TestSignal modeNTSC/PAL (Auto Adjust)Display2.8 inch TFT-LCD ,960 x 240 resolutionLCD adjustAdjustable ...