USR-G781 Industrail 4G LTE Modem with Ethernet Port and Sim Card

Communication Expert of Industrial IOT
USR-G781 Industrail 4G LTE Modem with Ethernet Port and Sim Card
USR-G781 Industrail 4G LTE Modem with Ethernet Port and Sim Card
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Price: $136.50
Availability: In Stock
Model: USR-G781
Average Rating: Not Rated

Available Options:

Buy via paypal Buy it now $161.5 USD
include $25 shipping cost.


User Manual:

Ticket System: submit your ticket at if you have technical questions about the item.

List of LTE networks:


USR G781 is a Cellular Modem- Industrial Serial to 4G LTE Modem with Sim ard and Ethernet Port. It provides a serial to cellular networking solution: transmit data transparently from serial port RS232/RS485 to device over 4G LTE ,3G WCDMA/ UMTS/HSDPA and 2G GSM/GPRS/EDGE. The 4G LTE Ethernet Modem also has external antenna and DIN-rail and wall-mounting housing. Easily to add network connectivity to serial devices in the field.



Basic Parameter

Wired Ethernet Port  
WAN port WAN *1
LAN port LAN * 1
  one can be WAN or LAN port and another one can be LAN port
Band of G781  
TDD-LTE Band 38/39/40/41
FDD-LTE Band 1/3
WCDMA Band 1/8
TD-SCDMA Band 3/8
Band of G781-E  
FDD-LTE Band 1/3/5/7/8/20
TDD-LTE Band 38/40/41
WCDMA Band 1/5/8
GPRS Band 3/8
Band of G781-V  
FDD-LTE Band 4/13
Band of G781-A  
FDD-LTE Band 2/4/12
WCDMA Band 2/4/5
Band of G781-AU  
FDD-LTE Band 1/2/3/4/5/7/8/28
TDD-LTE Band 40
WCDMA Band 1/2/5/8
GPRS Band 2/3/5/8
SIM card&Antenna  
SIM/USIM Card standard 6 pin SIM card, 3V / 1.8V SIM card
Antenna SMA port 5dBi full-frequency antenna
Working Temp -25 - 85 °C
Storage Temp -40 - 125°C
Storage Humidity Storage Humidity
Storage Humidity Storage Humidity
Power Supply  
Working Voltage DC 9V~36V
Working Current average: 180mA@12V; Max: 300mA @12V


  • Support Asia,  American(  AT&T and Verizon SIM Card) , European ,Australia Band and Frequency
  • 2 RJ45/Ethernet port, option to use one LAN port as WAN connection.
  • Support 4 Socket independent connection
  • Virtual Private Network: APN and VPN Client (PPTP, L2TP)  Note: OpenVPN and IPSec,  L2TP, GRE are in developing stage .
  • Support static routing
  • Support NTP to check the time.
  • Support TCP/UDP client mode and server mode.
  • Support upgrading firmware via FTP
  • DDNS, Dynamic domain mapping
  • Serial to HTTP format
  • Firewall and QOS flow control management
  • Heartbeat packet: can be sent to serial or network periodic. To ensure connection is reliable, put an end to dead link.
  • Identity /Registration packet: identified header can be added to packets to check connection status.
  • Integrated Hardware and software watchdog timer
  • Serial port protection: Reverse connection projection, ESD anti-surge, anti-static, Surge protection, EFT
  • The metal enclosure can be mounted on a DIN-rail or on the wall
  • Transparent transmission mode and Http Client Mode
  • Configuration method: Built-in Webpage configuration and AT Command configuration
  • USR Cloud Management for remote device management


4G LTE M2M Ethernet Modem provides fast connection speeds for embedded Machine-to-Machine (M2M) and Internet of Things (IoT) applications.

  • Energy: Digital Oil Field, Coal Mine, Solar, Smart Grid,
  • Utilities: Smart City, Traffic, Street lIghting, Public Safty, , Environment monitoring, Video Surveillance
  • Industrial: Remote Telemetry, Tanking Monitoring, Automation, Remote PLC, Remote AMR, Remote Monitoring and control
  • Retail: ATM, POS(Point-of-Sale), Vending Machine, Lottery Machine, Branch network, Digital Signage, Video Surveillance.
  • Transpotation: Bus WiFi, Vehicle video surveillance, Fleet tracking and management, Bus Advertising

LTE Modem


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USR-G781 Industrail 4G LTE Modem with Ethernet Port and Sim Card
Click to enlarge
USR-G781 Industrail 4G LTE Modem with Ethernet Port and Sim Card
Click to enlarge