GPRS Serial Server

GPRS Serial Server

WAN wireless communication technology GPRS solution will enhance the application of industrial communication to a higher degree.IOTWORKSHOP developed industrial-grade GPRS serial server can be easily and transparently make serial RS232 / RS485 / RS422 device connected to the cellular network,serial data max can be transmit to 2 server IP address, Users can achieve the existing serial device to connect network at any place through the most basic configuration.


  • Support Four Frequency Bands, Global Standard(850/900/1800/1900MHz)
  • Support GSM/GPRS (No 3G Network) and 2G/3G/4G CMCC or CUCC SIM Card
  • Support Max 3 channel TCP/UDP.
  • Support Multiple Work Mode(Transparent Transmission/AT Commands)
  • Embedded RS232/RS422/RS485 to GPRS interface
  • Size: 95 x 65 x 25mm
  • Single 5~36V DC Power Supply 

Sizing Table

Name HF2111  >> HF2111A  >>
Image HF2111 HF2111A
Internet Type GSM/GPRS
Data Rate 85.6Kbps(DL,UL)
Frequency 850/ 900/1800/1900MHz
Multi-Slot Class GPRS Class 12
Terminal Device Class Class B
Coding Schemes CS1 ~ CS4
Max Transmit Power GSM850/GSM900: Class 4(2W) DCS1800/PCS1900: Class 1(1W)
Application AT Command
Network Protocol TCP/UDP
Max Link 3
SIM Card 1.8V/3V
Antenna Interface SMA(female, 50Ω)
Port Interface 1 RS232/RS422/RS485 RS232: DB9 RS485/RS422: 5.08mm connector
Data Bits 5,6,7,8
Stop Bit 1,2
Charity Bit None,Even,Odd
Baud Rate 1200bps ~ 115.2Kbps
Flow Control RTS/CTS
Buffer 1K
Size 95 x 65 x 25mm
Work Temp. -40 ~ 85°C
Storage Temp. -45 ~ 105°C 5 ~ 95% RH
Input Voltage DC 5~36V
Work Current ~400mA
Power <2W
Guarantee 2 years
Accessories 5V/1A Adapter, Male to Female Serial Cable GPRS Antenna