Installation guide
 Quasar CM-4251 Series User and Installation Guide 
102 
A.1.  Technical Specifications 
Camera 
Image Sensor 
1/2.5" 5M Progressive CMOS 
Effective Pixels  
2592 x 1944 (H x V) 
Shutter Speed 
1.0 to 1/10,000 (auto) 
Sensitivity 
0.2 Lux in color mode; 0.02 Lux in night mode 
Enclosure 
Tamper-resistant surface mount plastic case 
Lens 
Lens Type 
Motorized F1.8, 3.6mm to 9mm 
Field of View 
90゚wide to 36゚tele @ full resolution 
Video 
Video Streaming 
Simultaneous H.264 + MJPEG H.264 + H.264 
Video 
Resolution 
H.264 
2592 x 1944 (5MP)/2048 x 1536 (3MP)/Full HD 1080p/SXGA/HD 720p/ 
XGA/SVGA/D1/VGA/CIF 
MJPEG 
Full HD 1080p/SXGA/HD 720p/XGA/SVGA/D1/VGA/CIF 
Frame Rate 
Single 
Stream 
H.264 (2592 x 1944) @12 fps 
Dual Stream 
CM-4251-10-I 
CM-4251-11-I 
H.264 1080p @ 25/30 fps + 
H.264/MJPEG D1 @ 25/30 fps 
5MP: H.264 2592 x 1944 @12 fps + 
H.264/MJPEG D1 @ 12 fps 
3MP: H.264 2048 x 1536 @ 15 fps + 
H.264/MJPEG 720p @ 15 fps 
2MP: H.264 1080p @ 25/30 fps + 
H.264/MJPEG D1 @ 25/30 fps 
Operation 
Image 
Setting 
Brightness 
Manual 
Exposure 
Auto-iris, Auto/Fixed Shutter 
Sharpness 
Manual 
Contrast 
Manual/Auto/ATW 
Hue 
Manual 
Backlight 
Compensation 
On/Off 
Digital Zoom 
Supported (x2 to x8) 
WDR 
On/Off + 3 levels 
3DNR 
On/Off + 3 levels (with Latitude), On/Off + 6 levels (without Latitude) 
Privacy Mask 
(Video Mask) 
Web interface: On/Off. Up to five embedded web interfaces are 
supported in the streaming video output, but are not supported by 
Latitude. In the Latitude interface, the Privacy Mask is independent of 
the camera’s on-screen display and is not embedded. 
IR Function 
Day/Night (Auto/On/Off/Smart) 
Audio 
Two-way Audio  
Line out/Line in 
Compression 
G.711/G.726 (not supported by Latitude) 
Alarm 
Input 
5V 10kΩ pull up 
Output 
Photo Relay Output 300V DC/AC 










