2.4G hz 3.5 Lcd receiver and 4 x 208c cmos sensor cameras

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3.5 Lcd screen display, 4 channels selectable, china manufacturer specifications: camera: 320tv lines display, built-in microphone, 4 channels selectable, receiver: 3.5 Lcd screen display, -85dbm receiving sensitivity, 4 channel selectable, channel scan function, built-in speaker.