Industrial 4G/LTE router with GPS support. Equipped with two Ethernet ports, dual SIM slots, IO lines, serial RS-232/RS-485 ports and OpenWrt operating system.

Router designed for industrial, M2M/IoT and commercial applications, including transportation, energy, smart grid, ATM, vending etc. Provides robust and high-speed wireless access to Internet over LTE (4G) network.

Linux-based OpenWrt operating system allows to create secure VPN networks and install custom software and thus, can serve as a controller of automated control system.

GTR40G Router Features

— LTE modem speed up to 150Mbps
— 2 x 10/100Base-TX Ethernet interfaces
— RS-232, RS-485 serial ports
— 2 x SIM card slots
— 1 x USB A (Host/Device)
— 1 x microSD memory card slot
— 4 x I/O lines supporting several operating modes:
— Network services: OpenVPN, PPTP, GRE, IPSec, NAT, Firewall, IPv6, DHCP (Server/Client), TinyProxy, NTP, FTP, SIM manager, etc.
— Modbus-TCP – Modbus RTU/ASCII conversion
— OpenWrt® open-source operating system, providing wide range of capabilities for creating secure VPN networks
— Temperature compensated real-time clock (RTC) providing high timekeeping accuracy
— GNSS/GPS tracking
— Power supply voltages: 10V-50V (DC)


Frequency Range LTE B1/B3/B7/B8/B20, UMTS/HSPA+ B1/B5/B8
Rate(DL/UL) 4G LTE: 100 Mbps*/50 Mbps
WCDMA: up to 384 kbps
EDGE class 12: up to 237 kbps
GPRS class 12: up to 85.6 kbps
* no more than 30 Mbps under real conditions
CPU NXP i.MX287 454 MHz
RAM Memory A128 Mb
Flash memory 256 Mb
Source DC 10 ~ 50 V
Consumption 8 W
Current 400 mA (24V)
Connector MicroFit 4-pin
Dimensions 97 x 78 x 36 mm (L x W x H)
Weight 180 gr
Enclosure Aluminum alloy (IP30)
Mounting DIN rail, wall, table rubber feet
Operating temperature -40…+70°C
Warranty 2 years
Relative Humidity up to 90% at 20°C temperature
Average Service Life 10 years
Certifications CE, RoHS
Ethernet 2 x RJ-45 10/100 Mbps
USB 1 x USB2.0 A type (Host/Device)
SIM 2 x mini-SIM
RS-232 1 x DB9-M. Rate: 1200-15200bps. 8N1
RS-485 1 x 2-pin terminal block. Rate: 1200-115200bps. Termination resistor: connected 120 Ohm
IO lines x4. Operating modes: voltage measurement, resistive sensors connection, load control. Max. voltage: 50V (max. measurable voltage: 18V). Max. current (per channel): 60mA
SD card 1 x microSD
Operating System OpenWrt (Linux-based)
Network Services GRE, IPIP, OpenVPN, L2TP, PPTP, PPPoE etc, NAT, MPLS, DHCP (server/client)
Management • LuCI web interface
• command line (SSH)
Protocol Conversion Modbus RTU/ASCII ↔ Modbus TCP
Reliability • dual SIM card slots,
• hardware watchdog timer,
• Multi-WAN
Security IPSec/VPN, Firewall IPRoute, IP/MAC filtering
• G – GPS module with high accuracy time synchronization unit. 1 x SMA(f) connector for GPS antenna
• S – Supercapacitor to provide router backup power supply


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