Papan putih Pen Touch Children Writing USB Infrared Portable For Writing On Projection Virtual Screen for School

😊💝Welcome to my Shop!😊Reminder!!----This product needs to be used with the projector. Confirm the projector projection ratio before purchase.Note: Does not include projectors, computers or whiteboards.Software default language: English, Spanish, ArabicSuitable for Windows 8 and above systems. Product features:1. Virtual interactive projection screen;2. Portable;3. Technology: Optical Technology;4. Manual Calibration (4 points/15 points/63 points);5. Connect: The sensor and computer are connected by USB Cable;6. Support size from: Adjust the size arbitrarily according to the actual situation, up to 150 inch.Portable interactive whiteboards are available for presentations on the move. You then connect the device to your laptop or desktop computer. Specification: Calibration: Manual Aspect Ratio: 4:3 16:9 Active Area (horizontal angle): 33 +/- 2 degreesActive Area (vertical angle): 0-30 degreesWorking Principle: Infrared image processing position trackingTransmission Interface: USBApplied To: Any material including soft screen and white wallPower Consumption: Response Time: E-pen Light Emitted: Infrared System RequirementsOS Required: Windows 8,10,11Processor Type: Intel Pentium or aboveRAM Size: 128 MBMin Hard Drive Space: 30 MBProjection Size Recommended Signal Reception Distance56 inch 1600mm68 inch 2100mm70 inch 2300mm75 inch 2500mm85 inch 2800mm92 inch 3200mmIt is recommended that the sensor be placed at a distance of 3m from the projection screen.