Description
The USR-G781 from USR-IOT is a reliable and high-performance 4G LTE router that provides seamless connectivity in a range of industrial applications. This cellular modem router comes equipped with features such as ESD, Surge, and EFT protection, ensuring reliable and secure communication even in harsh environments.
The USR-G781 provides serial-to-4G modem support, with 2 RJ45 ports that can be configured for WAN and LAN use. This device supports a range of VPN protocols such as IPsec, PPTP, L2TP, OPENVPN, and GRE, making it easy to securely access remote networks.
The USR-G781 supports 2G/3G/4G networks all over the world, making it an ideal solution for businesses with a global footprint. This device supports APN/VPDN sim cards, providing seamless and secure connectivity to remote sites.
In addition, the USR-G781 supports multiple operating modes such as network transparent transmission mode and Modbus RT. This makes it easy to integrate with existing systems and streamlines data exchange between devices.
The USR-G781 from USR-IOT is a reliable and versatile 4G LTE router that provides secure and seamless connectivity in a range of industrial applications. It is an ideal solution for businesses looking for a robust and dependable cellular modem router.
● 2 RJ45 port, WAN and LAN can be selected
● Supports IPsec VPN, PPTP,L2TP, OPENVPN,GRE etc.
● ESD,Surge,EFT protection.
● Supports 2G/3G/4G network all over the world ,supports APN/VPDN sim card
● Supports multiple modes: network transparent transmission mode, Modbus RTU
Resources
- [User Manual] USR-G781-User-Manual_V1.0.06.02
- [Specification] Specification of 4G LTE modems USR-G781
- [Datasheet] USR-G781 Datasheet
- [AT Command] USR-G781-AT-Command-Set_V1.0.0
- [USR-G781] Setup Software V1.0.0.0
- [PC Test Software] USR-TCP232-Test-V1.3
- [Virtual COM Software] VCOM_Setup_EN_V4.0.6.4
- [Virtual COM Software]USR-VCOM_V3.7.2.529_Setup
- [Socket_Demo] Socket_Demo.zip
Specifications
| Parameter | Item | Desc |
| 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 x 1 and LAN x 1 |
| Data Interface | RS232:300bps - 460800bps | |
| RS485:300bps - 460800bps | ||
| Indicator LED | LINKA, LINKB, TXD, RXD, POWER, NET, WORK, SIM | |
| Working Voltage | DC 9V~36V | |
| Working Current |
Average current 180mA@12V
Peak Current 300mA@12V
|
|
| Working Temp. | -35C-75C | |
| Storage Temp. | -40C-125C | |
| Working humidity | 10%~90% | |
| Storage humidity | 5%~90% | |
| Software Parameters | Work Mode | Transparent Mode, httpsD Client Mode |
| Setting Command | AT+ Command Structure | |
| Network protocol | TCP/UDPDNS/https/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 | |
|
https Protocol
Transmission
|
Support | |
| Heartbeat Packet | Support | |
| Identity Packet | Support IMEI/ICCID/self-defined identity packet | |
| Baud Rate Synchronization | Support | |
| USR Cloud | Support |
Serial Modem
The USR-G781 integrates routing and serial modem functionality, providing seamless bi-directional data transmission between RS485/RS232 devices and 4G networks. With support for connecting to various cloud platforms, this device enables easy access to remote systems and real-time data exchange.
The USR-G781 also provides user-defined register and heartbeat packets, ensuring that the device remains online and connected. This feature enhances the reliability and stability of the device, making it ideal for use in industrial applications where uninterrupted communication is critical.
HTTPD Client
The USR-G781 industrial 4G LTE router with cellular modem functionality allows for the submission of serial data to a designated server using the HTTP (GET/POST) method.
Modbus RTU to TCP
Modbus RTU/Modbus TCP protocol conversion for industrial SCADA
systems and field devices.
Product Overview
