Interactive whiteboard(IWB) is a large white board display that connects to a computer and projector. A projector projects the computer's desktop onto the board's surface, where users can write by pen or finger. The board is typically mounted to a wall or on a floor stand.Sizes: 78, 87, 88, 92, 105, 120Features:1. Multi-touch boards 2. Competitive price and high quality 3. Low-cost multi-touch whiteboard 4. Support win7 multi-touch boardTouch technology Infrared touchResolution(interpolation) 4096*4096Input method Finger, pen, teaching pointer, any other opaque objectTouch Times UnlimitedMin. Touch object 5mmResponsible time 8msSupport system Win2000, Win2003, XP, Win7 32 bit, Linux, Mac OS X 10.5, HID support all the systems, Win7 multi-touchTouch Activation Force No minimum touch activation force is required with IR touch technologyTemperature Operating: -20C 70C, Storage: -40C 85 Relative Humidity Operating: 90%(noncondensing at max 40C), Storage: 90%(noncondensing at max 40C)Altitude Up to 3, 000mLife Time At least 7-yearOperation Voltage Typical +DC 5V, +4.75V to +5.25VPower Supply USB, power ripple max.200mV rmsPower