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technology | infrared |
writing stylus | finger, opaque object |
positioning accuracy | <1mm |
usb cable | 5meters |
operating system | windows,linux,android |
cursor speed | 180 d/s |
projection ratio | 4:3 /16:9/16:10 |
working condition | under sun,indoor,or outdoor |
viewing angle | 170 degree horizontally/160 degree vertically |
touch point | 4/6/8/10 touch points |

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