In addition, the Air Class and web browsers support multi-directional communication and interactive learning, which will help you achieve successful business outcomes. The TR3BF Series can simultaneously use up to 20 points of multitouch and 10 points of writing, as well as 2 types of stylus pens. This function offers a lifelike board writing experience and makes collaboration much easier. The TR3BF Series allows you to easily erase texts, pictures, etc., written on the screen by using your own hands. This is not only easier than erasing with the stylus, but also feels more natural, like erasing a real whiteboard. Air Class supports connecting up to 30 students and offers interactive meetings for all mobile devices on the same network, providing a variety of tools such as voting, answering, and sharing project texts. The TR3BF Series allows you to share screens and content with laptops and other mobile devices, making meetings and classes as efficient and immersive as possible. The TR3BF Series supports OPS slots, allowing you to easily and conveniently mount an OPS desktop at the back of the digital board without the hassle of connecting to an external desktop, offering you expanded functions. The TR3BF Series supports the web browser in the Android OS, so you can search the web easily and quickly, without connecting to an external desktop. The UHD resolution displays details at a resolution that is four times higher than FHD, even when zoomed in. Various documents, images, and videos can be displayed without any distortion, which is especially important in an educational and collaborative environment. The TR3BF Series presents multimedia content to attendees more vividly. The IPS panel clearly displays content at various angles, regardless of where attendees are sitting. Each pixel of the IPS panel reproduces the actual color of the image without any distortion.