Industrial Serial 3G/4G Cellular Modem with LAN Ports Data Transmit Unit

Official Online Shop | Communication Expert of Industrial IOT
Industrial Serial 3G/4G Cellular Modem with LAN Ports Data Transmit Unit
Industrial Serial 3G/4G Cellular Modem with LAN Ports Data Transmit Unit
Click to enlarge
Price: $128.00
Availability: In Stock
Model: USR-G781
Manufacturer: USR IOT
Average Rating: Not Rated

Available Options:

Different Version:
Buy via paypal Buy it now
include $25 shipping cost.

Introduction of Industrial Serial to Cellular Modem, 4G LTE modem

USR-G781 is a 4G/3G Router and Serial Data Transmit Unit. USR-G781 provide a serial to cellular networking solution. Industrial Ethernet device or serial device can use G781 to access the internet database.
List of LTE networks


                     Operation Band

        Network Type G781 (Asia ) G781-E (Europe ) G781-AU ( Australia ) G781-A ( USA ) G781-V ( USA )
4G FDD-LTE 1/3 1/3/5/7/8/20 1/2/3/4/5/6/7/8/28 2/4/12 4/13
TDD-LTE 38/39/40/41 38/39/40/41 40    
3G WCDMA/HSPA/UMTS 1/8 1/8 1/2/5/8 2/4/5  
2G GPRS/GSM/EDGE 3/8 3/8 2/3/5/8

Features of Industrial Serial to Cellular Modem, 4G LTE Modem 

  • 2 RJ45 port, one can be WAN or LAN port and another one can be LAN port.
  • Support VPN(PPTP) client.
  • Support static routing
  • Support Firewall and QoS
  • Support DDNS
  • Support NTP to check the time.
  • Support TCP/UDP client mode and server mode.
  • Support identity packet and heartbeat packet.
  • Support Serial to HTTP format
  • Support upgrading firmware via FTP.
  • Integrated Hardware and software watchdog timer.


Application of Industrial Serial to Cellular Modem, 4G LTE Modem

Client Support Center : submit your ticket at if you have questions about the product.

Parameter Item Index
SIM card and antenna SIM/USIM card Six pin SIM card interface, 3V/1.8V SIM card
Antenna SMA interface, 5 dBi antenna
Hardware Parameters Wired Internet interface WAN*1 and LAN*1
Data Interface RS232:300bps - 460800bps
RS485:300bps - 460800bps
Working Voltage DC 9V~36V
Working Current
Average current 180mA@12V
Peak Current 300mA@12V
Working Temp. -25°C-85°C
Storage Temp. -40°C-125°C
Working humidity 10%~90%
Storage humidity 5%~90%
Software Parameters Work Mode Transparent Mode, HTTPD Client Mode
Setting Command AT+ Command Structure
Network protocol TCP/UDPDNS/HTTP/FTP
Max TCP connections 4
User Configuration Method Setting Software, AT command and Web Server configuration
Software Functions VPN Support PPTP
Static routing management Support 
Firewall Support
Network diagnosis Support
Remote Management Support
Transparent Transmission Support TCP Server/TCP Client/UDP Server/UDP Client
HTTP Protocol
Heartbeat Packet Support
Identity Packet Support IMEI/ICCID/self-defined identity packet
Baud Rate Synchronization Support
USR Cloud Support
Write Review
Your Name:

Your Review: Note: HTML is not translated!

Rating: Bad            Good

Enter the code in the box below: