The visual presenter is a full-automatic multifunction visual presenter. It captures
all types of presentation materials, such as papers, 3D objects and transparencies.
It can be widely used in classrooms or meeting rooms for better school or business
demonstration and the digital visual presenter (video visualizer) can display printed
matter, overhead transparency, slides, X-ray films, and solid objects on theinteractive whiteboard.

Technical parameters:

2800HV 2800SD 2800SV
lens F1.6 -- F3.2, f=3.9 –85.5mm F1.6 -- F3.2, f=3.9 – 85.8mm F1.6 -- F3.2, f=3.9 – 85,8mm
Display area maximum 380×270 mm maximum 380×270 mm maximum 380×270 mm
Zoom Optical 22 times, digital 8 times Optical 22 times, digital 8 times Optical 22 times, digital 8 times
Focus Automatic Automatic Automatic
Aperture Automatic Automatic Automatic
Camera 1 / 4 "CCD Colorful 1 / 4 " CMOS Colorful 1 / 4 " CMOS Colorful
Actual Pixels 800,000 1,300,000 2,000,000
Horizontal Definition 480TV line 650TV line 650TV line
SNR 52 52 52
White balance Automatic Automatic Automatic
Image processing functions Positive/ Negative,
Brightness adjustment,
Image freeze,
Mirror,
Colorful/ Black and White,
Divide Screen,
Text / Image Mode,
Capture,
8 image storage（can’t save after power off） Positive/ Negative,
Brightness adjustment,
Image freeze,
Mirror,
Colorful/ Black and White,
Divide Screen(image split)
Text / Image Mode,
Capture,
64 image storage (save after power off) Positive/ Negative,
Brightness adjustment,
Image freeze,
Mirror,
Colorful/ Black and White,
Divide Screen(image split)
Text / Image Mode,

Assistant light LED Light 1.5W*2 LED Light 1.5W*2 LED Light 1.5W*2
Back light LED Light 4W LED Light 4W LED Light 4W
VGA *2 Yes Yes Yes
PC-Audio*2 Yes Yes Yes
MIC Optional Optional Optional
VGA*2 Yes Yes Yes
Video Yes Yes Yes
PC-Audio*2 Yes Yes Yes
S-Video Yes Yes Yes
USB None Yes None
Control panel Yes Yes Yes
remote control Optional Optional Optional
USB control None None None
RS-232 control Yes Yes Yes
power supply DC 12V DC 12V DC 12V
Power consumption ≤30W ≤30W ≤30W