DeviceLab DL-GW400 Industrial 4-Port Isolated RS485 Edge Gateway
The DeviceLab DL-GW400 (formerly DL-IOT-GW-4) is an enterprise-grade industrial multi-port edge computing gateway featuring 4 fully galvanically isolated RS485 ports and dual Gigabit Ethernet ports. Designed for main switchboards (MSB), large-scale building management systems (BMS), and automated smart factories, it aggregates up to 128 field Modbus devices across 4 independent serial branches on a unified Linux edge hardware platform.
- 4 fully galvanically isolated RS485 ports (3.0kV optical isolation per channel) prevent ground loops between separate panels
- Dual Gigabit Ethernet (10/100/1000 Mbps) with dual independent MAC/IPs isolates OT fieldbus from IT plant network
- Linux-based edge computing environment runs Node-RED and Python 3 for onboard edge rule calculation and filtering
- Dual redundant 9–48V DC power inputs with auto-failover, ensuring continuous uptime in critical infrastructure
HARDWARE ARCHITECTURE & RELIABILITY
Key Technical Features
Engineered for extreme electromagnetic conditions in industrial control panels, substations, and smart facilities.
4 Independent 3.0kV Isolated RS485 Ports
Each serial port is powered by its own isolated DC-DC converter and optocoupler circuit. A ground short or transient surge on one channel will never compromise the remaining three serial buses.
Dual Gigabit Ethernet Subnet Isolation (OT ↔ IT)
Features two independent Gigabit RJ45 controllers. Port 1 interfaces strictly with industrial automation devices (PLCs, meters), while Port 2 communicates with enterprise ERP/Cloud, enforcing physical cybersecurity isolation.
Embedded Edge Computing Engine (Node-RED / Python)
Enables onboard edge rule calculation, local data filtering, and custom protocol parsing directly inside the gateway, drastically cutting cloud bandwidth costs.
Dual Redundant Power Inputs (9–48V DC)
Equipped with dual power terminals for primary and backup DC supplies with reverse polarity and overvoltage protection, maintaining zero downtime.
PRODUCT DATASHEET
Detailed Technical Specifications
All parameters measured and verified under laboratory stress testing and industrial environmental standards.
| Processor & Platform | Quad-Core Industrial ARM Cortex-A53 @ 1.2 GHz, 512MB DDR3 RAM, 8GB eMMC |
|---|---|
| Operating System | Embedded Debian Linux (DeviceLab Edge OS with Node-RED, Python 3 runtime) |
| Serial Interfaces | 4 × RS485 (Individual 3.0kV Galvanic Optical Isolation per channel, 600W TVS surge) |
| Ethernet Interfaces | 2 × RJ45 (10/100/1000 Mbps Gigabit, dual independent subnets / MAC addresses) |
| Cellular Option | 4G LTE Cat-4 / Cat-1 fallback with dual SIM failover support |
| Field Protocols | Modbus RTU/ASCII Master & Slave, Modbus TCP, OPC UA Server/Client, BACnet/IP |
| IoT Protocols | MQTT / MQTTS (TLS 1.3), HTTP/HTTPS REST, Sparkplug B, WebSocket |
| Alarm & I/O | 1 × Relay Alarm contact output (30VDC/2A), 4 × Port TX/RX LEDs |
| Power Supply | Dual Redundant 9–48V DC screw terminals with reverse polarity protection |
| Operating Temperature | -40°C to +85°C fanless; heavy-duty aluminum enclosure, 35mm DIN-rail |
| Warranty | 12 Months (1-to-1 immediate advance replacement) |
CABINET INSTALLATION GUIDELINES
Wiring Schematics & Installation Specs
Signal Wiring Standard Guidelines:
Serial: 4 separate terminal blocks for Port 1–4 (A+, B-, GND). Dual Power: PWR1 (V1+, V1-) and PWR2 (V2+, V2-). Dual LAN: ETH1 (OT fieldbus) and ETH2 (IT uplink).
FIELD IMPLEMENTATION
Typical Industrial Applications
Proven in factory automation, smart energy management, and industrial IoT retrofitting projects.
Main electrical switchboards (MSB) aggregating 100+ digital power meters across 4 risers.
Building Management Systems (BMS) integrating HVAC chillers, VAV controllers, and lighting panels.
Automated wastewater and environmental telemetry stations requiring circular 10 multi-channel datalogging.
Industrial edge computing nodes preprocessing factory sensor streams before cloud ingestion.
TECHNICAL DOCUMENTATION & ARTICLES
Related Application Notes & Guides
TECHNICAL DOCUMENTATION & ARTICLES
FREQUENTLY ASKED QUESTIONS
Technical FAQs on DL-GW400
Engineered for extreme electromagnetic conditions in industrial control panels, substations, and smart facilities.
How does the DL-GW400 compare to using 4 individual 1-port converters?
The DL-GW400 reduces total hardware procurement costs by over 50%, consumes only one power connection and one network switch port, and embeds an industrial Linux computing platform capable of edge filtering, protocol normalization, and local logic processing before transmitting data to cloud databases.
Do the four RS485 serial ports on the DL-GW400 operate completely independently?
Yes. All four RS485 ports feature independent 2.5kVAC galvanic optical isolation and dedicated hardware UART buffers. Each port configures individual baudrates, parity settings, and protocol mappings without cross-talk, ground potential interference, or serial data bottlenecks between communication branches in control panels.
What are the hardware specifications and embedded operating system of the DL-GW400?
The DL-GW400 features an industrial ARM Cortex processor, 512MB RAM, and 4GB eMMC storage running industrial embedded Linux. It supports lightweight runtime environments including Docker, Python, and Node-RED for flexible edge data processing, containerized microservices, and multi-protocol conversion pipelines across diverse industrial environments.
Can the DL-GW400 execute edge computing analytics and automated local control scripts?
Yes. The gateway executes on-premise logic algorithms: filtering high-frequency noise, mathematical parameter scaling, threshold alerting, and immediate closed-loop actuator triggering without relying on continuous connectivity to remote central cloud servers, ensuring maximum operational resilience during wide-area network blackouts and communication disconnects.
Which uplink network interfaces connect the DL-GW400 to supervisory control layers?
The gateway features dual independent 10/100Mbps Ethernet ports (WAN/LAN) with optional high-speed 4G LTE Cat-4 and industrial Wi-Fi modules, guaranteeing robust multi-channel network redundancy, firewall segregation, and seamless failover for mission-critical supervisory infrastructure telemetry, centralized SCADA monitoring, and continuous factory plant dispatch operations.
Does the DL-GW400 meet technical criteria for M&E and BMS procurement tenders?
Yes, fully compliant. The DL-GW400 complies with industrial EMC/EMI immunity standards and supports BACnet/IP, Modbus TCP, MQTT, and OPC UA protocols commonly specified in building management system (BMS) and smart factory automation tender specifications for institutional engineering contractors and system integrators.
How are electrical power protection and surge suppression designed on the DL-GW400?
The gateway accepts wide 9–36VDC power inputs, protected by 600W TVS surge suppression diodes across all four serial ports and power rails. Its rugged aluminum IP30 chassis provides effective electrostatic discharge (ESD) immunity and standard 35mm DIN-rail mounting for harsh environments.
What technical commissioning support and warranty terms does DeviceLab offer for the DL-GW400?
The DL-GW400 includes a 12-month manufacturer replacement warranty with 1-to-1 unit replacement. DeviceLab’s embedded software engineers provide reference application scripts, cloud onboarding documentation, and software development kits (SDKs) to expedite customer system deployment, edge rule creation, and rapid field commissioning.
ENGINEERING PROJECT CONSULTATION
Request Quotation: DL-GW400
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