Wireless Voting Systems

Key Specifications/Special Features:

• Processor parameter
• Pass: pass: 2CHA/B
• Channel: 30ch/pass, 60 frequencies in total
• Channel interval: 200KHz
• Working frequency ISM section
• CHA 905.000 to 910.800MHz
• CHB 917.000 to 922.800MHz
• Transmit output power: 10dbm
• Modulation mode: GFSK modulation frequency deviation: < +/-50KHz
• Code: Manchester code
• Transmit speed: 100KHz
• Receive sensitivity: -100dbm (bit error: 1/1,000 hours)
• Data reliability: 16 bit CRC
• Link mode: principal and subordinate
• Max capability: 2,000 units
• Capacity setting: in order to save the system checking time and improve the operating efficiency, choosing the optimum capacity range (400 /800 /1200 /2000) according to the quantities of the using units is recommended. No effect to sign in and vote result will occur when the quantities of using units do not exceed the range which has been chosen
• The sign in and vote result is subjected to the quantities of the units that have been signed in and checked by the system
• Display: 240 x 64 lattice LCD Chinese interface
• PC jack RS-232 9,600Kbs
• Operation voltage: AC 220V, operation current: < 350mA (DC 12V)
• Ambient temperature range: -5 to +60 degrees
• Voting unit parameter:
• The RF characters: the same with the processor
• Operation by five keys: enter/sign/yes/no/abstain
• ID code: CHA 0001 to 1000 CHB 1001 to 2000
• Data reliability: 16bit CRC technology (16CRC)
• Link mode: principal and subordinate
• Display: 40 x 36/40 lines multicolor sieve lay LCD
• Chinese interface
• Operation voltage: DC 4.5V (LR03 by 3)
• Operation current: stay level: < 10mA
• operate: backlight + key - light < 70mA
• Net weight: 200g