The visual presenter is a full-automatic multifunction visual presenter. It capturesall 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 businessdemonstration and the digital visual presenter (video visualizer) can display printedmatter, overhead transparency, slides, X-ray films, and solid objects on theinteractive whiteboard.Technical parameters:1) Model no.: BL-2000A2) Optical system lens F=1.4-2.7, F=3.9-64.2mm3) Shooting area: 300 x 230mm (max.); 28 x 21mm (min.)4) Optical zoom: 12X5) Digital zoom: 8X6) Focus auto / manual7) Brightness adjustable8) Video system image sensor: 1/4 inch color CCD9) Total pixel: 470,00010) Horizontal resolution: e470 lines11) White balance: auto / manual12) Picture memory: 1 - 32 pictures (NV)13) Image freeze: yes14) Color / B&W switch-able15) Positive / negative switch-able16) Connections: input RCA/75 x 1; output RCA/75 x 217) S- port input / output mini DiN4P x 118) RS232 control 19) Supplied voltage: 160 - 240V, AC, 50 - 60Hz20) Power consumption: e30W producing area:China payment:T/T in advance supplying capacity:1,000 sets/month