The USB video grabber system is ideal for home/small business use, use friendly. 4 cams, 2ch audio on board, and 1 ch PC audio. Display and recording rate: 25fps (PAL), 30fps (NTSC). Auto e-mail email alarm upon motion activation. Remote view/playback via IE. MPEG4 compression. Support remote surveillance and PTZ control via browser With this portable simple 4 channel video grabber, you can connect your wired surveillance cameras (up to four channels) directly with your computer/laptop and see four pictures (quad)  at the same time, you can also choose to install the video in your computer’s hard disk.