Classroom Response System - 2.4ghz Digital Rf Technology, Lcd Display With Feedback | Supports Various Question Formats, Usb Receiver, 100m Range, 180 Audience Capacity, Over 2-year Battery Life

Following are the Main Features of Classroom Response System :-
2.4GHz 2-way digital RF technology.
LCD screen display with right/wrong feedback capability
Up to 100 meter range and 180 audiences within 1second and more than 2000pcs for one host.
USB receiver
360 degree signal transmission
English and Simple Chinese version for choice.
Third part software support such as PowerPoint, easy to install and use.
Question options include: single choice, multiple choice, sequencing, rating scale, yes/no, numeric (including fractions, decimals and mixed expressions), fill blank, voting, quiz and exam..
Powerful statistics function, convenient for teacher currently, general evaluation.
Stability system, compatibility, it is better combine use with blank board.
Be suitable for varies teaching material.
2pcs of 1.5V batteries
Battery life more than 2 years.