ethernet 4g modem
a-4g modem ethernet portlte cellular modem
USR-G781/$132.60 In stock

Industrial RS232/RS485 Serial to 4G LTE Modem with Ethernet Port and Sim Card


Wide range input voltages : 5V -36V DC

Extended operating temperature :(-25 °C~ 85°C)

Interface: RS232/RS485/Ethernet (1*WAN, 1*LAN ).

SIM Card Slot and External Antenna

Function: APN & VPN (PPTP/L2TP Protocol), PPPOE, DHCP, Static IP

 Band and Frequency :Asia, American (  AT&T and Verizon SIM Card) , European ,Australia

Request a Quote


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.

Band and Frequency  

4G LTE Modem

List of LTE networks: https://en.wikipedia.org/wiki/List_of_LTE_networks

  • 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 modem ethernet



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

4g lte lan port modemlte ethernet modem

Wired Ethernet Port
WAN portWAN *1
LAN portLAN * 1
one can be WAN or LAN port and another one can be LAN port
Band of G781
TDD-LTEBand 38/39/40/41
FDD-LTEBand 1/3
WCDMABand 1/8
TD-SCDMABand 3/8
Band of G781-E
FDD-LTEBand 1/3/5/7/8/20
TDD-LTEBand 38/40/41
WCDMABand 1/5/8
GPRSBand 3/8
Band of G781-V
FDD-LTEBand 4/13
Band of G781-A
FDD-LTEBand 2/4/12
WCDMABand 2/4/5
Band of G781-AU
FDD-LTEBand 1/2/3/4/5/7/8/28
TDD-LTEBand 40
WCDMABand 1/2/5/8
GPRSBand 2/3/5/8
SIM card&Antenna
SIM/USIM Cardstandard 6 pin SIM card, 3V/1.8V SIM card
AntennaSMA port,5dBi full-frequency antenna
Working Temp-25℃- 85℃
Storage Temp-40℃- 125℃
Storage Humidity10%~90%
Storage Humidity5%~90%
Power Supply
Working Voltage DC 9V~36V
Working Currentaverage:180mA@12V,Max:300mA @12V

User Manual

[Datasheet] USR-G781 Datasheet  | download
[User Manual] USR-G781 User Manual | download
[AT Command] USR-G781 AT Command Set | download

Application Software

[Software] USR-G781 Setup Software V1.0.0.0 | download

Product Certificate

[Certificate] 4G LTE Series CE ROHS Certificate | download

Company File

[Product Catalog] USR Product Catalog | download

All USR products will be tested by R&D first, then production test again.(ESD Test,Surge/EFT Test, High/Low Temperature Test, EMC and LVD environment reliability test, etc.) Click here to watch test videos.
USR products test USR products test USR products test USR products test
USR products are exported to more than 100 countries and regions, get approvals like CE, FCC, ROHS, CCC, KC, IC, SRRC, etc.
USR product certificate
We also offer fast and reliable After-Sales Service, Leave your questions in Ticket System and we will respond to you in 15 minutes.
Get a FREE quote today and join the growing community of “IOT” dealers
© 2017 USRIOT All Rights Reserved    xml sitemap