Building automation projects combining multiple field protocols and local processing.
Small sensor networks that only require a basic packet forwarder.
Confirm field-bus interfaces, LoRaWAN region, required drivers, software licensing and the selected order code.
Building management, facility monitoring and energy optimization.
Use these official resources to verify specifications, plan deployment, manage software, and confirm support requirements.
It is a strong fit when your project matches the use cases listed in the Best for section and the key specs align with your network, interface, environmental, and management requirements.
Confirm regional connectivity, ports, power, mounting, operating environment, software features, management workflow, and whether you need accessories such as antennas, cables, sensors, or a gateway.
Many Robustel products are used in SCADA, PLC, and remote monitoring workflows. Match the required protocol, interface, bandwidth, and security requirements to the product specifications before deployment.
Compare the related collection, review application articles in the Industrial IoT Blog, or contact Robustel with your site requirements for a technical recommendation.
Model: LG5120
The Robustel LG5120 is an industrial-grade edge computing gateway optimized for E2C Facility applications. Acting as an intelligent building control gateway, it bridges the gap between traditional building automation and modern cloud management, supporting common protocols like KNX, BACnet, M-Bus, and LoRaWAN.
● Edge Computing Performance: Features a Quad-core 1.6 GHz Cortex-A53 CPU, 2.3 TOPS NPU, 8 GB DDR4 RAM, and 64 GB eMMC for processing complex logic at the edge (HVAC optimization, lighting automation).
● Comprehensive Industrial Connectivity: Integrates 4G LTE, 2x Gigabit Ethernet, LoRaWAN (Semtech SX1302), Wi-Fi, 1x M-Bus, 1x KNX, 1x P1, 2x isolated RS-485, 1x RS-232, 2x DI, 2x DO, and 2x AI, supporting diverse building automation and industrial field devices.
● Secure & Reliable Industrial OS (RobustOS Pro): Powered by RobustOS Pro (Debian 11) with a built-in Niagara framework and visual orchestration (Node-RED) for drag-and-drop automation.
● Simplified Cloud Management: Integrates fully with the RCMS cloud platform for fleet-wide monitoring and OTA updates, delivering true "Cloud-Edge Synergy".
Hardware System
● CPU: Quad-core Cortex-A53, 1.6 GHz
● NPU: 2.3 TOPS
● RAM: 8 GB DDR4
● Storage: 64 GB eMMC
● Watchdog: External
● RTC: Remains functional up to 7 days after power loss
● Indicators: 1 x RUN, 1 x Signal, 1 x USR, 1 x MDMNetwork Connectivity
● Cellular: 4G LTE (2 x SMA-K antennas)
● SIM: 2 x Mini SIM (2FF)
● Wi-Fi: 802.11a/b/g/n/ac/ax, 2.4/5 GHz (1 x RP-SMA-K antenna, supporting only 1T1R)
● LoRaWAN: US915, EU868, AU915, AS923, Supports up to 8 channels receiving data simultaneously (1 x RP-SMA-K antenna)
Interfaces
● Ethernet: 2 x RJ45, 10/100/1000 Mbps, configurable as 1 x WAN + 1 x LAN or 2 x LAN, with 1.5 kV magnet isolation protection
● Serial: 1 x M-Bus, 1 x KNX, 1 x P1, 2 x isolated RS-485, 1 x RS-232, with 3.5 mm terminal block connectors
● I/O: 2 x Digital Input, 2 x Digital Output (wet contact), 2 x Analog Input (0–24 V / 4–20 mA, software configurable)
● USB: 1 x USB 3.0 Host (Type-A), 5 V, 500 mA
● SD: 1 x microSD
● Reset Button: 1 x RSTPower & Physical
● Input Voltage: 12/24/48 VDC, 9–60 VDC
● Power Consumption: 5 W (Idle), 20 W (Max) @ 12 VDC
● Housing: Metal
● Protection: IP30
● Dimensions: 49 x 105 x 128 mm
● Weight: 560 g
● Installation: Desktop, Wall Mounting & 35 mm DIN-Rail Mounting
Environmental
● Operating Temperature: -40°C to +70°C
● Storage Temperature: -40°C to +85°C
● Relative Humidity: 5% to 95% (non-condensing)
Certifications
● Environmental: RoHS 2.0
Software
Operating System
● OS: RobustOS Pro (based on Debian 11 Bullseye)
Networking & LoRaWAN
●E2C Facility Suite: Built-in LoRaWAN Network Server (LNS), unified polling for KNX, BACnet, Modbus, and OPC-UA, Node-RED orchestration, automated scene management, and edge data forwarding to BACnet/IP and OPC UA
● Network Protocols: PPP, PPPoE, ARP, VLAN, ICMP, NAT, TCP, UDP, DHCP, DNS, DDNS, NTP, HTTP, HTTPS, Telnet, SSH2, SMTP, Static Routing, etc.
● Serial Port Protocols: Transparent, TCP Client/Server, UDP, Modbus RTU Gateway
● Other Features: Smart Roaming V3, Language, etc.Security
● VPN: IPsec, OpenVPN, WireGuard, GRE, DMVPN, L2TP, PPTP
● Firewall: DMZ, anti-DoS, Filtering (IP/Domain name/MAC address), Port Mapping, Access Control
SDK & Customization
● SDK Languages: C, C++, Python, Java, Node.js, etc. (for users to develop their own applications)
● Available Resources for SDK: 60 GB Flash, 7 GB RAM
Management
● Configuration Interfaces: Web GUI, CLI, SMS, RCMS
● Remote Management Platform: Robustel Cloud Manager Service (RCMS)
● RCMS Features:
● Centralized Monitoring & Control
● Fleet-wide Over-the-Air (OTA) updates for firmware, configurations, and applications
● Secure Remote Access to device Web GUI/CLI and connected end-devices
Experience robust, cloud-native device management by registering at: Robustel Cloud Manager Service
● Commercial Buildings & Offices
● Energy Management & Carbon
● Healthcare, Campus & Facilities
● Industrial grade fanless design
● Up to 10 years hardware lifetime
● Up to 10 years long term support for Linux
● Up to 5 years hardware warranty
● Global certifications
● Robust connectivity
● Order code: A016000001
● Package contains: 1 x LG5120+EU868, 2 x Cellular Antenna, 1 x Wi-Fi Antenna, 1 x LoRa Antenna, 1 x Power Adapter, 1 x DIN Rail Mounting Kit
● Order code: A016000002
● Package contains: 1 x LG5120+AU915, 2 x Cellular Antenna, 1 x Wi-Fi Antenna, 1 x LoRa Antenna, 1 x Power Adapter, 1 x DIN Rail Mounting Kit
● Order code: A016000003
● Package contains: 1 x LG5120+AS923, 2 x Cellular Antenna, 1 x Wi-Fi Antenna, 1 x LoRa Antenna, 1 x Power Adapter, 1 x DIN Rail Mounting Kit
