key Featured Detailed Specs Resources You can get feedback from the entire classroom within seconds. Our voting system is designed to work with our existing RM Easiteach software allows the teacher to quiz the classroom and get an average of their understand of the lesson within seconds. Model WT30 Size 11" Active area 10.2"(211.7*150.7mm) Frame area 253 *283 * 21mm Resolution 2040 line/inch Reponses speed <8ms Curser speed 120 dots/S Location Accuracy 0.1mm Writing pen Electrical pen (Change to standby mode after 5 minutes no working） Pen Pressure 1024 levels Function button 16/Simulate Windows hot key Hot key Play/Page up/down/Adjust volume LCD size 45.6*18mm Working mode Normal mode, control mode, voting mode LCD icon content Battery 4 levels status display; charging indicator; system status; channel indicator; signal status; answering status; question no display Power supply USB or adapter Battery capacity 3.7V/1100mAh Operation system Windows 2K/XP/2003/Vista/7 32or64 bit New function Inside spare pen tip replacement One pc dongle storage and auto power cut function Charging status indicator Lock, rope hole Auto standby function after 40 minutes no operation