

DH3
HIGHLIGHTS
- Wirelessly gather/distribute sensor data
- Map I/O anywhere within the network
- Modbus Master/Slave functionality
- Ethernet connectivity facilitates IoT and
IIoT implementations - MQTT/Sparkplug B functionality
- Supports remote and local Over-the-Air (OTA) functionality for updating OleumTech wireless devices (900 MHz only)
- 2 configurable Serial/RTU ports (RS232/RS485)
- Data logging capabilities / secure web server
- -40 °C to 70 °C (-40 °F to 158 °F)
- 900 MHz / 915 MHz / 2.4 GHz / 868 MHz
- Secure AES encryption
- Class I, Division 2 (Zone 2) certified
- Optional local display available
- Advanced peer-to-peer (P2P) communication functionality
- US Patent #6,967,589


Primary Data Collection Point
The OleumTech® DH3 Wireless Gateway plays an integral role in the OTC Wireless Sensor and I/O Network. It possesses the ability to aggregate data from OTC wireless transmitters, I/O modules, and other gateways onto its 1920-point register holding table. Third-party devices can access the data over the Modbus or LevelMaster ASCII.
Data Logging Capabilities
The DH3 offers both event-based data logging and time-based trending/logging capabilities. The data can be stored onto its internal RAM (volatile) or onto an optional industrial-grade Micro SD card (non-volatile). Trend graphs are accessible via the DH3’s secure web server.
Advanced Peer-to-Peer Networking
Multiple gateways can be deployed to the OTC platform for creating a custom, highly scalable network. The gateways have the power to communicate with each other. You can leverage the peer-to-peer technology for funneling data to the primary gateway for optimizing network efficiency and/or designing an extremely flexible I/O mapping system across the entire wireless network.
Ethernet + Serial + Local Display Option
Equipped with both Ethernet and Serial ports, the DH3 is designed for interfacing multiple third-party devices. Having both Modbus Master and Slave functionalities, the DH3 provides endless possibilities for solving telemetry challenges. OleumTech offers a local I/O expansion solution for integrating analog and discrete I/O capabilities to the DH3. An optional touchscreen LCD display is also available for added convenience.
TECHNICAL SPECIFICATIONS
WIRELESS COMMUNICATIONS | |
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Radio Band | ∙ ISM Band (License-Free) |
900 MHz / 915 MHz | ∙ FHSS, FSK, AES Encryption 256-bit (900 MHz), 128-bit (915 MHz) |
2.4 GHz | ∙ DSSS, AES Encryption 128-bit |
868 MHz | ∙ LBT-AFA, AES Encryption 128-bit |
Bit Rate | ∙ 900/915 MHz: 9600 bps / 115.2 kbps; 2.4 GHz: 250 kbps; 868 MHz: 80 kpbs |
Output Power (Max) | ∙ 900/915 MHz: 1000 mW; 2.4 GHz: 63 mW; 868 MHz: 25mW |
Receiving Sensitivity | ∙ 900/915 MHz: -110 dBm @ 9600 bps, -100 dBm @ 115.2 kbps |
∙ 2.4 GHz: -101 dBm @ 250 kbps / 868 MHz: -106 dBm @ 80 kbps | |
RF Range | ∙ 900/915 MHz: Up to 40 Miles / 64 km with Clear Line of Sight (Gateway to Gateway or I/O Module) |
∙ 900/915 MHz: Up to 7500 Feet / 1.4 Miles / 2.3 km with Clear Line of Sight (Transmitter to Gateway) | |
∙ 2.4 GHz: Up to 4.3 Miles / 7 km with Clear Line of Sight (Gateway to Gateway) | |
∙ 868 MHz: Up to 5.2 Miles / 8.4 km with Clear Line of Sight (Gateway to Gateway) |
HARDWARE FEATURES | |
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Device Functionality | ∙ Wireless Gateway with Ethernet/Serial Connectivity and Data Logging Capabilities |
Embedded Controller | ∙ 32-Bit Power ARM Cortex - A9core Microprocessor, Up to 800 MHz CPU Speed |
Memory | ∙ Flash Memory: 4 GB / SD RAM Memory: 512 MB |
Ethernet 10/100/1000BASE-T | ∙ Modbus TCP/IP Master/Slave, DHCP Client/Static IP (Device Designed to Work Behind Firewall) |
∙ Supports Local/Remote Device Configuration and F/W Upgrade Using BreeZ® 5.0 or Higher | |
∙ Supports Auto-MDIX/Auto-Crossover for ad-hoc networking (PC directly to DH3) | |
Serial Interfaces | ∙ 2 RTU Ports (RS232/RS485 Software Configurable) |
∙ Modbus Master/Slave, LevelMaster ASCII Slave, ROC-Link Master (Supports Opcodes 17 and 10) | |
ROC: Read up to 10 User Configurable (TLP) Points, INT16 (signed or unsigned) or FL(OAT) | |
2 USB 2.0 Host Ports | ∙ Reserved for Future Use |
Mini-USB (OTG) | ∙ Supports Local Device Configuration and F/W Upgrade Using BreeZ® 5.0 or Higher |
Micro SD Card Slot | ∙ Only Use Industrial-Grade Micro SD Cards: Part # SX1000-SD2 (-40 °C to 70 °C) |
Device Diagnostics | ∙ Health Tag: Supply Voltage |
MECHANICAL SPECIFICATIONS | |
DH3 Dimensions | ∙ 4.6" (W) x 3.0" (H) x 2.0" (D) / 117 mm (W) x 76 mm (H) x 50 mm (D) |
Package Dimensions | ∙ 8" (W) x 6" (H) x 2.5" (D) / 203 mm (W) x 152 mm (H) x 63 mm (D) |
Package Weight | ∙ 1.3 lbs / 570 g |
Mounting | ∙ DIN Rail Clip (Spring-Loaded) |
ELECTRICAL SPECIFICATIONS | |
DC Power Input | ∙ 9-30 Vdc |
Average Power Input | ∙ Local Display Off: 3 Watt; Local Display On: 5 Watt |
Power Consumption @12 Vdc | ∙ 900 / 915 MHz @ 1000 mW: Receive Avg 172 mA, Transmit Avg 401 mA |
∙ 2.4 GHz @ 63 mW: Receive Avg 154 mA, Transmit Avg 209 mA | |
∙ 868 MHz @ 25 mW: Receive Avg 168 mA, Transmit Avg 231 mA | |
Power Consumption @24 Vdc | ∙ 900 / 915 MHz @ 1000 mW: Receive Avg 113 mA, Transmit Avg 228 mA |
∙ 2.4 GHz @ 63 mW: Receive Avg 99 mA, Transmit Avg 139 mA | |
∙ 868 MHz @ 25 mW: Receive Avg 99 mA, Transmit Avg 132 mA |
CERTIFICATIONS | |
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EMC/EMI | ∙ FCC Part 15 (USA), IC ICES-003 (Canada), ACMA (Australia) |
∙ AS/NZS CISPR 32 (Australia), EN55032 & EN55024 (EU) | |
Safety | ∙ Class I Division 2; Groups A, B, C, D; AEx ec nC IIC T4 Gc |
∙ Class I, Zone 2; Groups A, B, C, D; Ex ec nC IIC T4 Gc | |
∙ ATEX: ITS15ATEX48231X II 3 G Ex nA nC IIC T4 Gc | |
∙ IECEx: ETL15.0039X; Ex nA nC IIC T4 Gc |
DATA LOGGING | Records Data to Internal RAM, MicroSD Card Option for Data Persistence |
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Trending (RAM/Micro SD) | ∙ 800,000 Pts Max Regardless of Memory Capacity; Supports Multiple Trends; Exportable to .CSV |
Event Logging (RAM/Micro SD) | ∙ 100,000 Pts Max Regardless of Memory Capacity |
∙ Event Types: Rising or Falling Edge Event Control: Deadband or On-Delay; Exportable to .CSV | |
System Logging (RAM/Micro SD) | ∙ 100,000 Pts Max Regardless of Memory Capacity, Viewable on Web Server or Local Display |
WEB SERVER | |
Features | ∙ View Modbus Data, Trends, Event and System Logs, Device/Network Settings, and More |
Security/Privacy | ∙ Role-based Authentication (Admin/User/Guest), HTTPS |
BreeZ® SOFTWARE INTERFACE (PC APPLICATION) | |
Version/PC Platform | ∙ BreeZ® Version 5.0 or Later; PC with Windows® 7 or Later |
Connectivity | ∙ Configurable via Ethernet Port or Mini-USB Port |
Security/Privacy | ∙ Role-based Authentication (Admin/User), Communication Secured via SSL/TLS v1.2 |
GENERAL SPECIFICATIONS | |
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Operating Conditions | ∙ Temperature: -40 °C to +70 °C (-40 °F to 158 °F) |
∙ Temperature with Optional LCD: -20 °C to +70 °C (-4 °F to 158 °F) | |
∙ Humidity: 0 to 99 %, Non-Condensing | |
Warranty | ∙ 2-Year Parts and Labor |
Country of Origin | ∙ USA |
ORDERING INFORMATION | |
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Model Numbers | ∙ WG-0900-DH3, WG-0915-DH3, WG-2400-DH3, WG-0868-DH3 |
Wirelessly Connects To | ∙ OTC Wireless Devices (Gateways, Transmitters, I/O Modules) |
Micro SD Card | ∙ Only Use Industrial-Grade Micro SD Cards: Part # SX1000-SD2 (-40 °C to 70 °C) |
Local Display | ∙ 5.7" Local HMI Display WX-1000-LCD |
Configuration Cable | ∙ WX-1001-CA2, 15-ft USB to Mini-USB Cable or SX1000-CC2, 20-ft All-in-One Configuration Cable, Ethernet Cable |
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