Robustel LG5120 Industrial Gateway for LoRaWAN and Building Automation
Robustel LG5120 is an industrial edge computing gateway designed specifically for building automation and facility management. It connects wireless sensors with wired systems and forwards their data to higher-level BMS or SCADA platforms. On-device processing allows automation rules to run locally at the installation site.
Application examples
- Lighting and indoor environment control: Connecting KNX and heating, ventilation and air conditioning systems with LoRaWAN sensors allows operation to be adjusted according to room occupancy.
- Consumption monitoring: The M-Bus and P1/DSMR interfaces collect data from compatible meters. The data can be integrated into building energy management dashboards.
- Monitoring in schools and hospitals: Temperature, humidity and CO₂ sensors provide data for environmental monitoring and configuring alerts.
Hardware for local data processing
The LG5120 gateway features a quad-core ARM Cortex-A53 processor, 8 GB of RAM, 64 GB of eMMC storage and the Debian Linux-based RobustOS Pro operating system. This hardware enables on-device data processing, custom applications, automation and visualisation. An integrated NPU with 2.3 TOPS of performance accelerates artificial intelligence workloads. The gateway has an IP30-rated metal enclosure and supports operation at temperatures from −40 to +70 °C.
Network connectivity and interfaces
The gateway offers 4G LTE with two SIM slots, 2.4 and 5 GHz Wi-Fi and 2× 10/100/1000 Mbps Ethernet. KNX, M-Bus, P1, two isolated RS-485 ports and one RS-232 port are available for wired devices. These are complemented by two digital inputs, two digital outputs and two analogue inputs configurable for 0–24 V or 4–20 mA.
Flexible LoRaWAN networking and building systems integration
The LG5120 can use an external LoRaWAN network server (LNS) or a built-in ChirpStack-based server. It connects to an external server via LoRa Basics™ Station or UDP packet forwarding. You can integrate the gateway into existing infrastructure or use the local LNS to operate a private network and manage it directly at the installation site.
The E2C Trinity Facility software platform connects wireless sensors with building systems. It collects data from LoRaWAN, KNX, M-Bus, Modbus, BACnet and P1/DSMR devices as well as local inputs and outputs. You can use the data for dashboards, alarms and automation rules in Node-RED, or forward it to higher-level BMS, SCADA and cloud platforms via MQTT, BACnet/IP or OPC UA.
Codecs simplify the integration of supported LoRaWAN sensors by converting received data into a usable format. This reduces the need to manually decode and map individual values.
Remote management
The free RCMS cloud service enables remote device status monitoring, diagnostics and updates. For secure connectivity to the target network, the LG5120 supports WireGuard, IPsec and OpenVPN, among others.
Key features of the Robustel LG5120:
- LoRaWAN connectivity and integration with building automation systems
- Operating system: Debian Linux-based RobustOS Pro
- CPU: Quad-core ARM Cortex-A53 at 1.6 GHz
- Memory and storage: 8 GB DDR4 RAM, 64 GB eMMC flash
- Ethernet: 2× 10/100/1000 Mbps Ethernet ports
- Serial ports: 2× isolated RS-485 ports and 1× RS-232 port
- Building protocols and interfaces: Support for KNX TP, KNXnet/IP, M-Bus, P1/DSMR, BACnet, Modbus and OPC UA
- 4G LTE, dual SIM, Wi-Fi and two Gigabit Ethernet ports
- Power supply: 9–60 V DC
- Desktop, wall or 35 mm DIN rail mounting
- Operating temperature: −40 °C to +70 °C
- Weight: 560 g
Package contents:
- 1× LG5120 gateway
- 2× cellular antenna
- 1× Wi-Fi antenna
- 1× LoRa antenna
- 1× GNSS antenna
- 1× power adapter
- 1× DIN rail mounting kit
More information can be found in the attached datasheet.