... , within 2 days Features:Capture Adapters/USB VIDEO GRABBER/usb dvr for 4 channels1). 4 channels video input in one card, the maximum ... channel audio input. 3). 4 screen display modes are available. 4). Multi alarm triggering method: sensor, motion, video loss, ... recording mode, recycling recording method available. 6). MPEG4 video compression format. 5 level recording quality options available, and ...