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) GPRS multi-slot level is 10 (default) GPRS mobile station level B GPRS data downlink transmission: up to 85.6 kbps GPRS data uplink transmission: up to 85.6 kbps Encoding format: CS-1, CS-2, CS-3 and CS-4
Frequency 850/ 900/1800/1900MHz GSM850,EGSM900,DCS1800,PCS1900
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 Standard SIM card(1.8V/3V)
Antenna Interface SMA(female, 50Ω) SMA(female, 50Ω)
Port Interface 1 RS232/RS422/RS485 RS232: DB9 RS485/RS422: 5.08mm connector RS232: DB9 RS485: 5.08mm connector Choose either RS232 or RS485
Data Bits 5,6,7,8 7,8
Stop Bit 1,2 1,2
Charity Bit None,Even,Odd None,Even,Odd
Baud Rate 1200bps ~ 115.2Kbps TTL:2400 bps~460800 bps
Flow Control RTS/CTS No Flow control Half-Duplex(RS485) Hardware RTS/CTS、DSR/DTR(RS232)
Buffer 1K
Size 95 x 65 x 25mm 95mm x 65mm x 25mm
Work Temp. -40 ~ 85°C -40 ~ 85°
Storage Temp. -45 ~ 105°C 5 ~ 95% RH -45 ~ 105°C 5 ~ 95% RH
Input Voltage DC 5~36V DC 5~36V
Work Current ~400mA ~300mA@9V
Power <2W
Guarantee 1 year 1 year
Accessories 5V/1A Adapter, Male to Female Serial Cable GPRS Antenna
Transmit Power GSM850/EGSM900:5dbm~32.5dbm DCS1800/PCS1900:0dbm~29.5dbm
Receive Sensitivity <-108.5dBm