# 3G Industrial Router, USR-G806S, IoT, RS485, WiFi, RTU to TCP, 9-36V

- Page: https://sigmanortec.ro/en/3g-industrial-router-usr-g806s-iot-rs485-wifi-rtu-to-tcp-9-36v
- Price: 680.02 RON
- Availability: In stock; 1-2 zile
- Reference: 9771 · EAN: 5945972222492
- Category: Mechatronics and IoT > Communication, GPS and IoT
- Specifications: Supply Voltage: 9; Maximum Input Voltage: 36; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.487 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:49 (Europe/Bucharest)

## Description

IoT cellular router for connecting industrial equipment to the internet and integrating data into SCADA or cloud systems, with 2G/3G, WiFi and two Ethernet ports for flexible access and failover. Includes RS485 with Modbus RTU to TCP conversion, VPN support for secure communications, watchdog for stability, wide 9-36V power supply and DIN rail or wall mounting.
The USR-G806s is an IoT cellular router that integrates 3G, Wi-Fi and VPN technologies to provide easy, reliable and secure Internet connectivity, as well as high-speed data access for equipment interconnection. With technologies such as the extended 3G wireless network, two Ethernet ports (LAN + WAN), and the Wi-Fi local wireless network, it offers uninterrupted access capabilities to multiple networks.
The router comes with 3G and WiFi antennas. The package may or may not include a 12V, 1A power supply . If it is included, it may be for the EU or not, this differs from lot to lot.
The model integrates 4G but is functional in China
It supports 2G/3G networks from all over the world.
Supports APN/VPDN SIM cards.
Two Ethernet ports, WAN/LAN.
Supports Modbus RTU to TCP.
Supports the watchdog function.
Supports VPN IPsec, PPTP, L2TP, OPENVPN, GRE, etc.
Supports DDNS, PPPOE, DHCP, Static IP.
It supports e-mail notifications, SMS alerts and alarm notifications in case of real-time anomalies.
Offers wall or DIN rail mounting options for easy installation.
Material: Metal and plastic
Supports a wireless network (WLAN).
Supports web server.
Supports multiple LED communication indicators.
Supports reset button to restore default settings via hardware.
The wired network ports support a rate of 10/100Mbps.
It supports VPN client (PPTP/L2TP/IPSEC/GRE/OPENVPN/SSTP) and VPN and static IP encryption functions.
Supports special APN network cards.
It supports simultaneous wired and wireless network connections and intelligent switching between multiple backup networks.
It supports remote update and remote monitoring.
Supports Dynamic Domain Name System (DDNS).
It supports the mandatory portal (WIFIDOG), this function must be customized according to the client's needs.
Supports AT commands for SMS.
For more details, we invite you to download the user manual available in the Download section.
Specifications:
Supply voltage: 9 - 36VDC (12VDC Recommended)
Power plug: Screw pins or plug 5.5x2.1
RS485: Yes
MicroUSB socket: Yes
Wi-Fi: Yes
4G: Compatible only CN, not EU
Dimensions mm: 90 x 84 x 25mm
Cell
Interface
Antenna
1 x SMA-K
Note: North American models: 2 x SMA 4G antenna connectors.
SIM card
1 x (3 V and 1.8 V) 2FF standard SIM, drawer type SIM card slots
Ethernet
1 x WAN port (can be configured to LAN) 10/100 Mbps, IEEE 802.3 compliant, supports automatic MDI/MDIX, 1.5 KV mains isolation transformer protection
1 x LAN port, 10/100 Mbps, compliant with IEEE 802.3, IEEE 802.3u standards, supports automatic MDI/MDIX, 1.5KV mains isolation transformer protection
indicator
light
PWR: always on after boot
WLAN: always on when WiFi is activated and working properly
WAN: continuous when the cable is connected, flashing when data is being transmitted and received
LAN : fixed when the cable is connected, flashes when data is transmitted and received
2/3G mode indicator:
The 2G LED is on after connecting to the 2G network
The 3G LED is lit after connecting to the 3G network
Both LEDs are lit after connecting to the 4G network (CN only)
Signal strength : 4 solid bars, strongest signal
WiFi interface
Standards and frequency
IEEE 802.11b/g/n, 2.4 GHz, AP mode
Data speed
IEEE 802.11b/g, maximum 54 Mbps.IEEE 802.11n, maximum 150 Mbps
Antenna
1 x SMA-K
Transmission distance
80 meters in line of sight. The actual transmission distance depends on the location environment.
Power supply
Adapter
DC 12V/1A
Connector
5.5*2.1mm female barrel type DC power plug round plug or 5.08mm 2-pin industrial terminal block reverse polarity protection
Input voltage
DC 9~36V
Working power
Average 270mA/12V
Serial interface
RS485/RS232 (alternative)
Industrial terminal block with 3 pins of 3.81 mm. Note: RS485 default
Transmission rate (bps)
1200,2400,4800,9600,19200,38400,57600,115200,230400
Bits of data
8
Stop biting
1,2
Parity
NOTHING LIKE THAT
Physical
Characteristics
Housing
Metal housing, IP30
size
112.0 * 84.0 * 25.0mm (L * W * H )
Installation method
Panel mounting, DIN rail mounting
EMC
Static IEC61000-4-2, level 2
Pulsed electric field IEC61000-4-4, level 2
Surge IEC61000-4-5, level 2
Operating Temperature
-20 ℃ ～ +70 ℃
Storage temperature
-40 ℃ ～ +125 ℃
Operating humidity
5% ~ 95 %RH ( no condensation)
Others
Reload
Hole reset button
TBD
Debug interface (TTL level)
Built-in watchdog
The device runs self-detection, recovers automatically after failures
Software specifications
Network
Connection
WAN protocol
PPP, PPPoE, DHCP client
LAN protocol
ARP, DHCP server, NAT
4G network access (CN only)
Automatic APN/VPDN, private network
Access authentication: CHAP/PAP
WLAN security
Open system, WPA/WPA2 PSK
TKIP/AES encryption
IP routing
Static routing
Network diagnosis
Ping, route tracking, DNS
Serial modem
Way of working
NET, HTTPD
plugs
4 sockets, 4 hubs, TCPS(SOCKA)/TCPC/UDPS/UDPC
Modbus RTU to TCP
Support
Device
management
Configuration
Web
Remote management
Telnet, SSH, AT command, SNMP
The PUSR platform
Remote monitoring, remote upgrade, alarm, base station location, remote access to router web pages
Security
Failover backup
Failover between 3G and WAN ensures automatic switching to an alternative backup connection
Firewall
DMZ, anti-DoS, filtering (IP/domain name/MAC address), port mapping, access control
VPN
Supports PPTP, L2TP, GRE, IPSEC VPN (IKEv1), OPENVPN protocols
Service
DDNS
Remote access to the device by domain name
Alarm
Email, SMS
Others
NTP client
Synchronization task
Frequency
TDD-LTE
B38/B40/B41
FDD-LTE
B1/B3/B5/B7/B8/B20/B28
WCDMA
B1/B5/B8
GSM/GPRS/EDGE
850/900/1800MHz