Интерактивное голосование машина

Voting Machine adopts 2.4G RF keypad used eligible license-free/license-exempt frequencies to communicate key presses to the base station and receive from the base station control information and acknowledge keypad transmissions high speed data communication, response the voting result in a real time). Specifications Power supply USB Frequency 2.4Ghz Multiple channels 12 Maximum number of key pads800 Range 50m Processing speed 50-150 keypads /S Dimension 90mm*54mm*8.5mm Weight 0.033kg Display 6 Character LCD with floating point Keyboard 12Keys (1to 10; A to J; OK; Clear) Frequency 2.4Ghz Range 50m Power supply 2*CR2032batteries Battery life time 3 months depending upon how the unit is used Secure transmission Private protocol Multiple channels 12 Timing Votes can be timed to the nearest 20ms Support multiple choice Available