4G LTE Router with serial support - 2x DI/1x DO, 1x RS485, 2x RS232


  • High-performance, industrial grade, 4G-LTE cellular router with dual SIM slots and Ethernet WAN port
  • Multi-band - FDD 4G LTE/ TDD 4G LTE/ 3G WCDMA/2G GSM/ LTE Cat4
  • 2x DI + 1x DO, 3x Serial COM port (2x RS232, 1x RS485)
  • ModBus RTU and ModBus/TCP gateway, MQTT
  • Firewall, NAT, DMZ, Port & MAC filtering,  VLAN, RIP 1/2, OSPF V2/3, BGP
  • VPN, IPSec (3DES, AES128, AES196/256, MD5, SHA-1, SHA256)
  • SNMP, TR069,Web, Telnet
  • EN50121-4 EN60950-1 EN301908-1 EN303413 EN61000-6-2 EN61000-6-4 NCC 
  • Rugged, IP30  Fanless  - wide operating temperature -20 ~ 75°C


The ICR-4103 is a high-performance, industrial grade, 4G-LTE cellular router which is designed to offer fast connectivity over cellular networks for industrial applications. ICR-4103’sEthernet ports can allow up to 3 Ethernet devices to link to the cellular network. It provides dual SIM card slots and one Ethernet WAN port which can automatically re-connect and auto-switch to offer cellular network redundancy and ensure uninterrupted connectivity.The ICR-4103 cellular router is integrated with WAN, LAN, SIM,VPN, Firewall, built-in DI/DO and Serial port services. In addition, ICR-4103 uses the highest level of industrial grade design for connection in the most demanding environments and is an ideal solution for Industrial Internet of Things (IIoT) and M2M (Machine-to-Machine) applications, such as remote control and monitoring, bus ticketing collection system, CCTV, SCADA, digital signage, kiosk and intelligent traffic systems.

Typical application

4G LTE Ethernet router with RS485



4G Router with RS485


Item Description

IEEE 802.3 10Base-T 10Mbit/s Ethernet
IEEE 802.3u 100Base-TX Fast Ethernet
IEEE 802.1Q Virtual LANs (VLAN)
IEEE 802.3x Flow control for Full Duplex


Cellular MobilComm and WAN:
Built-in dual SIM card slots for network redundancy/ failover/ roaming over/ back up
2 SMA (female) connector for Antenna
1x 10/100Base-TX RJ45 for WAN port
LAN: 3x 10/100Base-TX RJ45
Serial: 1x RS485 and 2x RS232 (one of RS232 could be configured for console)

Programmable DI/DO: 2xDI and 1x DO

LTE data rate

Cat 4 ,Max download 150Mbps, Max upload 50 Mbps

Removable terminal block

Provides for Power input, DO, DI1, DI2, COM2 (RS232), COM3 (RS485)

Power Supply

Input 10-32VDC removable terminal block

Power consumption


Operation Temperature


Operating Humidity

5% to 95% (Non-condensing)

Storage Temperature

-40 ~ 85°C


Rugged Metal, Fanless , IP30 grade housing protection


106 x 62.5 x 135mm




Mounting : DIN Rail mounting or Wall mounting (Optional)


296,306 Hours (MIL-HDBK-217)


5 years


EMC CE (EN55024, EN55032)
EMI FCC Part 15 Subpart B Class A, CE
Railway Traffic EN50121-4
Immunity for Heavy Industrial Environment EN61000-6-2
Emission for Heavy Industrial Environment EN61000-6-4
EMS (Electromagnetic Susceptibility Protection Level) EN61000-4-2 (ESD) Level 3, Criteria B EN61000-4-3 (RS)  Level 3, Criteria A EN61000-4-4 (Burst) Level 3, Criteria A, EN61000-4-5 (Surge) Level 3, Criteria B EN61000-4-6 (CS) Level 3, Criteria A EN61000-4-8 (PFMF, Magnetic Field) Field Strength: 300A/m, Criteria A
Safety EN60950-1
Radio RED ETSI EN301 908-1, RED ETSI EN303 413, RED ETSI EN301 489-1, RED ETSI EN301 489-19, RED ETSI EN301 489-52, NCC
Shock IEC 60068-2-27
Freefall IEC 60068-2-32
Vibration IEC 60068-2-6

Ordering Information

Order Code Description
CT-ICR-4103-EU 4G LTE, 2x SIM, 4x FE + 2x DI/1x DO, 1x RS485, 2x RS232

More Information