... used on finance,water supply,environment protection,electric power system,post and weather fields.Wireless SpecificationEGSM900/GSM1800Compliant to ... RS232 serial port, rates: 110~230400bits/s Indicator lights: “Power”, “ACT”, “Online” Antenna interface: standard SMA female interface ... : standard user card interface Power interface: standard 3-PIN power jackPower supply:Standard power supply: DC 12V/0. ...