... cost.Product Features · Portable, 2.5” LCD display, and show camera image · OSD menu, easy to operate · NTSC/PAL auto ... · Internet line test, Video input/output test, Camera connect test · Control running of camera or PTZ camera, zoom, adjust aperture, and focus as ... seconds selectable) · Small and exquisite appearance, integrated and practical Portable Multi Function CCTV Tester LCD Controller PTZ