DeviceLab DL-IOT-GW-4 Industrial 4-Port Isolated RS485 Edge Gateway
The DeviceLab 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.
Key Technical Features:
- ✓ 4 Fully independent galvanically isolated RS485 channels (3.0kV per port), aggregating up to 128 devices
- ✓ Dual independent Gigabit RJ45 ports (Dual Subnet) securely separating factory OT networks from corporate IT/Cloud
- ✓ Powerful Edge Computing architecture: Quad-Core 1.5 GHz, 1GB RAM, 8GB eMMC running Industrial Linux, Node-RED, Python
- ✓ Dual Redundant 9–48V DC power inputs with auto-failover, complemented by 2 Digital Inputs and 1 Relay Output alarm
HARDWARE ARCHITECTURE & RELIABILITY
Key Technical Features
Engineered for extreme electromagnetic conditions in industrial control panels, substations, and smart facilities.
4 Fully Galvanically Isolated RS485 Channels
Each channel features dedicated 3.0kV optical isolation circuitry and microcontrollers. Line faults, ground differences, or short circuits on one branch will never impair the remaining 3 communication channels.
Aggregate Up to 128 Devices on a Single Hardware Unit
Distributes load across 4 independent buses (e.g., Bus 1: Power meters, Bus 2: HVAC chillers, Bus 3: Water/gas flowmeters, Bus 4: Machinery), slashing polling cycles and saving 75% in cabling, Ethernet switches, and DIN-rail cabinet space.
Dual Independent Gigabit Ports (IT/OT Network Separation)
Configurable as dual subnets with routing capabilities, ensuring sensitive factory floor control traffic (OT) remains securely isolated from office IT and Internet networks according to IEC 62443 standards.
Industrial Linux Edge Computing Ready
Powered by a Quad-Core 1.5 GHz processor, 1GB RAM, and 8GB eMMC flash running industrial Linux. Supports local execution of Node-RED workflows, Python telemetry scripts, and onboard SQLite database caching.
Dual Redundant DC Power Inputs (9–48V DC)
Features 2 independent DC power supply inputs with seamless automatic failover in the event of voltage dropouts on either line, ensuring round-the-clock critical telemetry uptime.
Auxiliary Hardware I/O for Local Alarms
Integrates 2 Digital Inputs (DI) and 1 Relay Output (DO, 30VDC/2A), enabling programmable triggering of audible/visual alarms or automated line tripping when field communication drops.
PRODUCT DATASHEET
Detailed Technical Specifications
All parameters measured and verified under laboratory stress testing and industrial environmental standards.
| Core Architecture | Quad-Core ARM Cortex-A53 @ 1.5GHz, 1GB DDR4 RAM, 8GB eMMC Storage |
|---|---|
| RS485 Interfaces | 4 × Independent RS485 (Pluggable 4-pin terminals with GND/Shield ground) |
| Isolation & Protection | 3.0 kVAC Galvanic isolation per channel, 600W TVS surge protection |
| Baud Rate Tuning | Independently configurable per channel: 1,200 bps to 115,200 bps |
| Ethernet Ports | 2 × Gigabit RJ45 (10/100/1000 Mbps), WAN/LAN routing, Dual Subnet IP |
| Auxiliary I/O | 2 × Digital Input (DI), 1 × Relay Output (30VDC/2A), 1 × USB 3.0 |
| Protocols Supported | Modbus RTU/TCP, MQTT/MQTTS, HTTP/REST, OPC UA Server, SNMP, BACnet/IP |
| Edge Capabilities | Node-RED runtime, Python 3 environment, onboard SQLite database engine |
| Diagnostics & Alarms | Per-port status LEDs (TX/RX/Error); physical relay alarm trigger output |
| Power Inputs | Dual Redundant 9 – 48V DC inputs with reverse polarity protection |
| Operating Temp | -40°C to +85°C; Fanless passive extruded aluminum cooling |
| Dimensions & Weight | 135 × 105 × 55 mm; Weight 650g; Standard 35mm DIN-Rail mount |
| Warranty | 24 months (1-to-1 hardware replacement policy) |
FIELD IMPLEMENTATION
Typical Industrial Applications
Proven in factory automation, smart energy management, and industrial IoT retrofitting projects.
Main Switchboards (MSB) and Low-Voltage distribution panels in commercial towers, campuses, and industrial zones.
110kV/22kV Substation monitoring and power company boundary revenue meter consolidation.
Large manufacturing plants consolidating hundreds of meters and sensors into MES / ERP systems.
Grade-A Building Management Systems (BMS) consolidating Chillers, Pumps, AHUs, and Energy Meters simultaneously.
CABINET INSTALLATION GUIDELINES
Wiring Schematics & Installation Specs
Signal Wiring Standard Guidelines:
4 Removable RS485 terminal blocks (A+, B-, GND). Dual Gigabit LAN1/LAN2. Redundant dual power terminals V1+/V1- and V2+/V2-.
DEVICE MATRIX
Compare with Related Models
Engineered for extreme electromagnetic conditions in industrial control panels, substations, and smart facilities.
| Technical Specifications | DL-RS485 ↗ Serial Device Server | DL-IOT-GW ↗ Modbus Edge Gateway |
Viewing
DL-IOT-GW-4
Multi-Port Gateway
|
|---|---|---|---|
| RS485 Ports | 1 Port | 1 Port | 4 Independent Isolated Ports |
| Primary Purpose | Pure Signal Conversion | Smart Polling & Cloud Push | Main Switchboards, High-density Aggregation |
| Multi-Master Caching | None | Yes (< 2ms response) | Yes (Independent on all 4 channels) |
| Bus Line Diagnostics | Basic LED indicators | Detailed Web GUI suite | Per-port LEDs + Relay Alarm contact |
| IoT & Cloud Protocols | None | MQTT, HTTP, REST API | MQTT, OPC UA, REST, BACnet |
| Ethernet Interfaces | 1 × 10/100 Mbps | 1 × 10/100 Mbps (PoE supported) | 2 × Gigabit 1000 Mbps (Dual Subnet IP) |
| Offline Storage | None | Yes (100,000 records) | Yes (Onboard Edge SQLite DB) |
| Edge Computing | None | None | Yes (Node-RED, Python 3) |
| Power Supply | 9–36V DC single input | 9–36V DC or PoE 802.3af | Dual Redundant 9–48V DC inputs |
| Warranty | 24 Months (1-to-1 swap) | 24 Months (1-to-1 swap) | 24 Months (1-to-1 swap) |
| Pricing | Contact Us | Contact Us | Contact Us |
| Navigation | View details → | View details → | Quote this model ↓ |
TECHNICAL DOCUMENTATION & ARTICLES
Related Application Notes & Guides
TECHNICAL DOCUMENTATION & ARTICLES
FREQUENTLY ASKED QUESTIONS
Technical FAQs on DL-IOT-GW-4
Engineered for extreme electromagnetic conditions in industrial control panels, substations, and smart facilities.
How do the 4 RS485 channels operate independently on the DL-IOT-GW-4?
Each RS485 port is equipped with its own dedicated 3.0kV optical isolation barrier and independent transceiver controller. Each port can have a distinct baud rate and polling frequency. A short circuit or voltage transient on one bus branch will never degrade or freeze the other 3 channels.
What advantages do the Dual Gigabit Ethernet ports offer?
They enable true IT/OT network segregation (Dual Subnet): one port connects to the shop-floor industrial control network (OT), while the second connects to the enterprise IT office network or cloud gateway, fulfilling stringent IEC 62443 industrial cybersecurity standards.
Does the DL-IOT-GW-4 meet technical criteria for M&E and BMS procurement tenders?
Yes. The DL-IOT-GW-4 fully complies with demanding specifications required by M&E engineering consultants and BMS tenders: dual redundant 9–48VDC inputs, -40°C to +85°C fanless operating range, 35mm DIN-rail mounting, 3kV port isolation, and full engineering documentation.
ENGINEERING PROJECT CONSULTATION
Request Quotation: DL-IOT-GW-4
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