Item Type: GPRS Serial Device Server <br>Material: Aluminum alloy <br>Model: HF-2111 <br>Unlimited Parameters: <br>Standard: GSM/GPRS <br>Speed: 85.6Kbps (DL, UL) <br>Frequency Band: 850/900/1800/1900MHz <br>Multi-Slot Class: GPRS Class 12 <br>Terminal Device Class: Class B <br>Coding Method: CS1, CS2, Cs3, CS4 <br>Maximum Transmit Power: <br>GSM850/GSM900: Class 4 (2W) <br>DCS1800/PCS1900: Class 1 (1W) <br>Application Mode: AT command set <br>Network Protocol: TCP/UDP <br>Number Of Network Connections: 3 <br>SIM Card: 1.8V/3V <br>Interface: SMA (female, 50Ω) <br>Hardware Parameters: <br>Data Interface: 1 RS232/RS422/RS485 <br>RS232: Gold-plating male DB9 connector <br>RS485/RS422: 5.08mm terminal block <br>Data Bits: 5, 6, 7, 8 <br>Stop Bit: 1, 2 <br>Check Digit: None, Even, Odd <br>Baud Rate: 1200bps~115.2Kbps <br>Flow Control: RTS/CTS <br>Cache: 1K <br>Size: Approx. 95 x 65 x 25mm / 3.7 x 2.6 x 1in <br>Working Temperature: -40~85℃ <br>Input Voltage: DC9-36V <br>Working Current: ~400mA <br>Power Consumption: <2W<br>1、The GPRS serial device server has 4 frequency bands, namely 850/900/1800/1900MHz <br>2、The data packets received by the device through the serial port are sent directly to the web server through the HTTP protocol <br>3、No need to perform TCP Server development, options, and data storage operations can be realized by using scripts <br>4、Languages like PHP or ASP are very useful for B/S architecture systems, easy and simple to operate <br>5、Adopted of high quality electronic components, and accuracy process, ensure for the durabilityPlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.<p>1 x Serial Server</p><p>1 x Cable&nbsp;</p><p>1 x Suction Cup Antenna</p>