Features:
A. MJPEG hardware compression
B. System: NTSC & PAL system
C. Recording frame rate: NTSC max. 30 fps (quad)
                                      PAL    max. 25 fps (quad)
D. Recording modes: auto record, manual, schedule, motion detection
E. Motion detection: area selection & sensitivity adjustment for each camera
F. With video loss alarm function
Item / Model 3594  
Compression Format Modified MJPEG  
Video Input / Output BNC 4-ch input / 1-ch output (Composite)  
Display frame Rate NTSC: 120fps  4x30fps
PAL:  100fps   4x25fps  
Recording frame Rate NTSC:  Max. 30fps   4x7.5fps
PAL:  Max. 25fps    4x6.25fps  
Recording resolution  NTSC:  320x112, 640x224
PAL:     320x136, 640x272  
HDD Rack Fixed, supports up to 250Gbyte HDD  
Recording Time NTSC: 155 hours with 120GB HDD @ 15fps
PAL:    194 hours with 120GB HDD @ 12fps  

Recording Mode Auto-record, Motion Detection, Manual, Schedule  
Power Adapter DC 12V, 3A  
Dimension (LxWxH) 200mm x 132mm x 80mm  
Net Weight 0.97kg