An ideal design for home/office/shop guard or baby care purpose Cost-effective solution to replace commercial VCR tape recorder, which also supports stable digitize video record and easy manages the recorded data via index of date and time. Automatic Space Management. Stop recorder or capture still automatically on disk full. Video signal filter, for filtrate Active and Invalid channel. Signal lost alarm. Send e-mails attachment with image. Save image on Hard Disk. Sound alarm. Motion Detection. Adjustable sensitivity. Automatically lock, while not any operate. Schedule Monitoring sessions, for timer snap. Record video/audio(with usb2.0 audio interface), snap shot. Support 4 Channel Video input on one computer. Support On Screen Display. Display's date and time, or channel description on video. Supports manual open/close Invalid channel, or add/delete channel description. Supports login and logout, by User Name and Password. Supports running background stealthy.