1、The GPRS serial device server has 4 frequency bands, namely 850/900/1800/1900MHz 2、The data packets received by the device through the serial port are sent directly to the web server through the HTTP protocol 3、No need to perform TCP Server development, options, and data storage operations can be realized by using scripts 4、Languages like PHP or ASP are very useful for B/S architecture systems, easy and simple to operate 5、Adopted of high quality electronic components, and accuracy process, ensure for the durability 1 x Serial Server1 x Cable 1 x Suction Cup Antenna Item Type: GPRS Serial Device ServerMaterial: Aluminum alloyModel: HF-2111Unlimited Parameters: Standard: GSM/GPRSSpeed: 85.6Kbps (DL, UL)Frequency Band: 850/900/1800/1900MHzMulti-Slot Class: GPRS Class 12Terminal Device Class: Class BCoding Method: CS1, CS2, Cs3, CS4Maximum Transmit Power: GSM850/GSM900: Class 4 (2W)DCS1800/PCS1900: Class 1 (1W)Application Mode: AT command setNetwork Protocol: TCP/UDPNumber Of Network Connections: 3SIM Card: 1.8V/3VInterface: SMA (female, 50Ω)Hardware Parameters: Data Interface: 1 RS232/RS422/RS485RS232: Gold-plating male DB9 connectorRS485/RS422: 5.08mm terminal blockData Bits: 5, 6, 7, 8Stop Bit: 1, 2Check Digit: None, Even, OddBaud Rate: 1200bps~ 115.2KbpsFlow Control: RTS/CTSCache: 1KSize: Approx. 95 x 65 x 25mm / 3.7 x 2.6 x 1inWorking Temperature: -40~85℃Input Voltage: DC9-36VWorking Current: ~400mAPower Consumption: <2W