how to laser projector.. With IQBoard all-in-one GR519, it has 3 sizes: 80????,92????,100????. This screen doesn??t just boast ??interactivity??, it benefits from a 10 point multi-touch functionality, offering the ultimate solution for touch screen applications. With this capability, there can be up to 10 people using the touch facility of the screen at any one time, making it ideal for classroom use with things such as educational games, presentations or even specialist software. An added benefit of our Whiteboard is that it comes inclusive with a range of stylus tools with a strong fabric tip, allowing chief users to benefit from pleasant day to day operation and increased longevity, compared to many others.. IQProjector V2 is an Ultrashort focal laser projector. With laser as the light source, IQProjector V2 has a longer lifetime and vivid color. That contributes it a cost-effective choice.