The VS-2004L Vio Stor NVR is the 2-bay network surveillance system for home & SOHO security applications. The Linux-based system supports 4-channel H.264, MPEG-4, & M-JPEG recording from ONVIF-compliant IP cameras & surveillance devices Key Features Real-time monitoring & recording (video/audio) from up to 4 IP cameras High quality H.264, MPEG-4, & M-JPEG recording Multi-server monitoring (up to 128 channels) Video search by date & time, timeline, & event Live monitoring on iPad, iPhone, iPod Touch & Windows PDA by VMobile The unique multi-server monitoring feature of the Vio Stor NVR allows monitoring of up to 128 IP cameras from multiple QNAP NVR servers at the same time. No extra software is required. Instant alarm icon will be shown & the alarm channel will be highlighted to inform the administrator immediately if an event occurs. The Vio Stor NVR supports diversified recording features, such as scheduled recording, alarm recording by multiple alarm events, alarm recording schedule, & pre-alarm & post-alarm recordings. Advanced event management is provided for the administrator to define the handling options when events or alarms are triggered. The Vio Stor NVR also offers enhanced video search by intelligent video analytics (IVA), such as motion detection, foreign object, missing object, out of focus, & camera occlusion. Moreover, you can use the video surveillance application "VMobile" to monitor the IP cameras with your iPad, iPhone, iPod touch, & Windows PDA phones anytime, anywhere.