... been widely used on finance,water supply,environment protection, electric power system,post and weather fields.A. Wireless Specification1. Dual ... . Group 3: Class 1, Class 2B. Hardware System1. Industrial ARM9 CPU,200M2. FLASH4MB (Extendable to 16MB)3. SDRAM16MB ... ), rates: 110~230400bits/s Indicator lights: Power, Online, Alarm, System, Link/ACT Antenna interface: standard SMA female interface, 50 ...