hot sale interactive whiteboard/ smartboard office/school supplies Tou

الوصف

 Operate the computer on projection screen, run out of the  constraint of mouse and keyboard.
∷ Resolution ratio up to ***0×***0,no phenomenon of rag and jag  in writing. 
∷ Extendable support, support whiteboard in any ratio and size max up to **0”. 
∷ Ultra fast response speed, response Time is  Less than *5ms , no delayed perception.
∷ Automatic coordinate adaptation,  after the first calibration, when change to connect another computer, no need recalibration.
∷ USB and RJ*5 port, user could extend the facility.