HỆ THỐNG BIỂU QUYẾT KHÔNG DÂY

GONSIN BJ-W3 wireless voting system offers a portable, efficient and high performance solution for conference voting and audience response applications with chipcard reading. The system captures individual votes from wireless handheld voting units using powerful but user-friendly voting software and interference-free voting techniques, operating in the 433 MHz frequency band with maximum 300 meters range. The system on one base station unit supports up to 200 wireless handheld voting units, and can be expanded to 4000 voting units with additional base station units.       Main Features Easy to set up & maintain Stable & reliable operation Lightweight handheld unit Graphic LCD message display Proven RF wireless technology User-friendly voting software User registration by key or IC card Up to 24 selectable radio channels Up to 19,200 bps data rate Stable coverage range 150 meters GFSK data modulation Highly interference-resistant Real-time interference signal analysis Automatic data encryption Secure, anonymous votes Instant display of voting results  nguồn : bahung.com