HF2111A GPRS DTU User Manual
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Software
Configuration
Serial AT Command
IOTService Serial Port Configuration Software
IOTService Network Configuration Software
Firmware Upgrade
UART or OTA Upgrade
Basic Parameter
SIM Card
Standard SIM card(1.8V/3V)
Size
95mm x 65mm x 25mm
Operating Temp.
-40 ~ 85°C
Storage Temp.
-45 ~ 105°C, 5 ~ 95% RH
（
no condensation
）
Input Voltage
9~36VDC
Working Current
~300mA@9V
1.3. Key Applications
The HF2111A module connects the serial device to the Internet and conforms to the TCP/IP
protocol for transmitting serial data.
⚫
Remote device monitoring
⚫
Production asset tracking and monitoring
⚫
Security field
⚫
Industrial sensors and controllers
⚫
Health medical equipment
⚫
ATM equipment
⚫
Data acquisition equipment
⚫
UPS power management equipment
⚫
Telecommunication equipment
⚫
Data display device
⚫
Hand-held device
⚫
Attendance system and terminal equipment
