TruGem Dual Ethernet 4G Industrial Router C503 is a compact and robust networking solution tailored for industrial environments, seamlessly bridging the gap between industrial machinery and the digital realm. Its petite size belies its powerful capabilities, making it an ideal choice for space-constrained installations.
Equipped with 2 ethernet LAN port, RS232 and RS485 serial ports, C503 facilitates seamless communication with a variety of industrial devices, ensuring compatibility with diverse equipment and machinery. This versatility makes it an ideal choice for applications ranging from manufacturing automation to utility monitoring.
Designed to thrive in challenging conditions, C503 excels in high-temperature environments, providing reliable connectivity even in the harshest industrial settings. This robust performance ensures uninterrupted data transmission, critical for real-time monitoring and control.

- Equipped with Dual Ethernet +RS485 + USB
- Global 4G/3G cellular connections, supports Ethernet and 4G/3G cellular with auto-failover
- Working at high temperature.
- Visual web interface for flexible configuration and operation
- Supports Modbus RTU and Modbus TCP. supports 32 RS485 nodes for data collection by single device
- Supports MQTT and HTTPS protocal for data upload
- TruGem management platform,Supports industrial cloud platforms
- Support TR069 for remote upgrade and management.
- TruGem’s ACS for device management
- Supports DHCP, routing mode, and NAT mode
Cellular | |
FrequencyBands | LTE-TDD Band 38/40/41 LTE-FDD Band 1/3/5/7/8/20/28 WCDMA Band 1/5/8GSM 3/8 *more bands can be supported with different SKU |
Interfaces | |
Ethernet Interface | 2 x 10/100/1000 Mbps, RJ45 (auto-sensing) (1*WAN/LAN,1*LAN) |
Serial Interface | 1*RS232+1*RS485 |
USB | 1*Type-A,USB2.0,forexpansion |
Console Interface | 1*Type-A,USB2.0, |
Antenna Connector | 1*GNSS,1*4G |
SIM Slot | 1*Mini SIM |
TF Slot | 1 (built-in),forexpansion |
Power | |
Power Supply | DC 9-36V |
Consumption | <20W |
WiFi | |
WIFI | IEEE 802.11b/g/n/ac,supports 32 users access |
Indicators | |
LED indicators | 1*RTK,1*4G,1*GNSS,1*RUN,1*RXD,1*TXD |
Others | |
Hardware Watchdog | Built-in |
Supercapacitor | Optional |
Sensor | Built-in temperature sensor can monitor the working temperature of the motherboard in real time |
GNSS | Optional |
Mechanical characteristics | |
Protection Rating | IP30 |
Housing | Metal |
Installation | DinRail,Panel |
Dimension | 144 mm x 81 mm x 32 mm |
EMC | |
Static | EN61000-4-2, level 3 |
Radiation Electric Field | EN61000-4-3, level 3 |
Pulsed Electric Field | EN61000-4-4, level 3 |
Surge | EN61000-4-5, level 3 |
Conducted Disturbance Immunity | EN61000-4-6 ,level 3 |
Shock Wave Resistance | EN61000-4-12,level 3 |
Power Frequency Magnetic Field Resistance | EN61000-4-8, horizontal / vertical 400A/m (>level 2) |
Ambient Temperature And Humidity | |
Operating temperature | -30℃ ~ +75℃ |
Relative humidity | 10%~100% |
Storage temperature | -45℃~ +85℃ |
Network | |
WAN | Supports NAT, Router, Bridge, IP Pass through etc. |
LAN | Supports dynamic IP address allocation and access with static IP address mode |
Protocol | |
Industrial Protocol | Modbus RTU, Modbus TCP, MQTT, HTTPS, UDP, NTRIP etc.JSON format |
Security | |
Multilevel user | Multi-level management rights |
Data security | L2/L3 Firewall |
Firewall | Supports DMZ, Port Mirror and ALG; |
Supports firewall configuration management | |
Port forwarding | |
Port flip-flop | |
Reliability | |
Failover | Manually configure encryption |
Wachdog | Device runs self-detection, auto recovers from malfunctions |
Management | |
Remote Management | TR069, Web |
Firmware Management | Dual firmware backup |
Remote upgrade | TR069, HTTP/HTTPS, FTP, Telnet, SSH, etc. |
Device Management | TruGem’s ACS (Auto-Configuration Server )Periodic monitoring: Terminals can report parameters periodically according to server instructions, includes various performance of the terminal(Data rate in downlink and uplink, DL Packet Error Rate (PER), MCS, MIMO mode, etc)and Radio-frequency parameter(PCI, RSRP, RSRQ, SINR, Transmit power, etc.) |
Log | SSH |
TruGem C503 Dual Ethernet 4G Industrial Router ‘s petite size belies its powerful capabilities. Thus, making it an ideal choice for space-constrained installations, such as:
- Manufacturing
- Industrial Automation
- Logistics
- Smart Transportation
- Smart farming machinery
- Medical Instruments
- Industrial instruments
- Energy and utility systems
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