DH3 Wireless Gateway

Highly Versatile Wireless Gateway with Ethernet and Serial Interface.

  • Primary data collection point
  • Flexible and scalable networking
  • Distribute I/O anywhere within network
  • Ethernet port (10/100/1000BASE-T)
  • 2x Configurable Serial ports (RS232/RS485)
  • Modbus Master/Slave function
  • Supports event-based logging & trending
  • Web Server
  • 9-30 VDC external power input
  • Class I, Division 2 (Zone 2)
  • -40 ˚C to 80 ˚C / -40 ˚F to 176 ˚F
  • 900 MHz: Up to 40 miles (64.4 km)
  • 2.4 GHz: Up to 5.7 miles (9.2 km)
  • Secure AES encryption
  • Antenna sold separately


The OleumTech® DH3 Wireless Gateway plays an instrumental role in the OTC Sensor Network by wirelessly collecting critical process data from OTC nodes including Transmitters, I/O Modules, and other Gateways and storing the values in its 1920-point Modbus register holding table. It also has the ability to carry out output commands to mapped outputs points.


In the OTC Sensor Network, multiple Gateways can be deployed in the same network, creating an advanced peer-to-peer networking infrastructure. Each Gateway in the network can have its own set of nodes that can be peered to other Gateways in a network. By taking advantage of its high scalability and communication flexibility, users can gain a competitive edge by reducing material, labor, and engineering costs.


With its Ethernet and two configurable Serial ports, the DH3 can interface any third-party Modbus device.


The DH3 offers data logging in the form of event-based logging and data trending. Trending is accessible via Web Server.


The OTC Sensor Network is highly advanced enabling a DH3 or any other Gateway to take any input source or Modbus register and map it to an available output or to another register anywhere within its network. There are virtually no limitations as to how the OTC Network can be utilized for automation.


The DH3 Ethernet Wireless Gateway is configured using BreeZ Software by OleumTech, provided free of charge.


The DH3 Gateway can be purposed with an optional touchscreen LCD display that requires no configuration to view its Modbus register holding table, device and networking settings, and more.