The GF-3000W CDMA 1x modem developed by Beijing Garefowl New-tech Co., Ltd. It provides mobile users to access to Internet and can be connected directly to personal PC via serial port interface. Co-working with Microsoft dialup software, this modem can automatically detect link status and redial to recover the connection if the link disconnect. It is a highly reliable link satisfying requirements of industrial data transmission. Note: The accessories, Including AC adapter, RS232 cable and CDMA antenna will be required, along with a CDMA UIM card to operate and use the unit. 2. Features and Specification Specification Full TIA/EIA/IS-98A Compliance CDMA2000 1xRTT: CDMA 2000 protocol between Mobile & Base Station Data transmission up to 153Kbps Input voltage: 5V~25VDC (9V suggestion) Max. Output power: 1.4W ~ 2.0W Current consumption: 5mA (Sleep), up to 1A (Traffic) Receive Frequency: 869.04 ~ 893.37MHz (EM/EMII-800) 1841.25 ~ 1868.75MHz (EM/EMII-1800) 1931.25 ~ 1988.75MHz (EMII-1900) Transmit Frequency: 824.04 ~ 848.97MHz (EM/EMII-800) 1751.25 ~ 1778.75MHz (EM/EMII-1800) 1851.25 ~ 1908.75MHz (EMII-1900) Mechanical Dimensions: 75*50*16mm Weight 150g Working ambient temperature: -30oC to +70oC Interfaces Plug in power supply Mini-SIM card reader Antenna connector SMA (male) Standard RS-232C interface Operating status LED Applications Inventory/sales quote for outside sales people Reading and routing electric power/gas/water distribution Real time data acquisition using wireless internet Traffic light control Outdoor lighting control Industrial robot control Wireless parking meter control Wireless remote alarm Security monitoring system Wireless telemetry system Remote environment monitoring