DTECH DT-9022 2 Port RS485 Hub – Industrial Grade, Isolated, 9–40V DC

The DTECH DT-9022 2 port RS485 hub lets one master device reach two separate RS485 branches, so you can extend and restructure a serial network without rewiring the whole bus. Its main port accepts RS232 or RS485, and each branch connects on screw terminals. It has 2500 VRMS isolation, surge and ESD protection on every line, a wide 9–40V DC power input and a -40°C to 85°C operating range. It’s built for the plant rooms, cabinets and outdoor enclosures where industrial networks are installed.

Why Choose This 2 Port RS485 Hub

RS485 networks are usually wired as a single daisy-chain bus. That works until the site grows, or until a new device needs to be added in a different direction from the existing cable run. This 2 port RS485 hub splits the network into two branches from one master port. That gives you more flexible wiring and a cleaner layout for building management, energy metering and industrial control systems.

• Two branches, one master: connect a PLC, PC, gateway or controller to two RS485 lines.
• Protected against real-world faults: 2500 VRMS isolation, 600W lightning surge protection and ±15kV ESD protection on each line help protect your controllers from voltage spikes and ground loops.
• Built-in collision control: data collision protection manages traffic between the branches, keeping communication stable.
• Works with RS232 or RS485 hosts: the main port accepts either standard, so it suits older PCs and newer controllers alike.
• Wide power input: runs on any DC supply from 9V to 40V, including the 12V and 24V supplies found in most control panels.
• Made for harsh environments: operates from -40°C to 85°C and 5% to 95% humidity.
• Easy diagnostics: Power, TXD and RXD indicator lights show at a glance whether the hub is powered and passing data.

Where Integrators Use the DT-9022 2 Port RS485 Hub

System integrators, MEP and electrical contractors, facility management teams and industrial engineers use an RS485 hub wherever one controller needs to reach devices spread across a site. Typical applications include:

• Building management systems (BMS): run Modbus RTU and BACnet MS/TP lines to HVAC units, chillers and air handlers on different floors or wings.
• Energy and utility metering: link electricity, water and gas meters in separate risers or distribution boards to one data collector.
• Industrial automation: connect a PLC or HMI to drives, sensors and instruments on two production lines.
• Access control and security: split reader and controller networks between building zones.
• Solar and power systems: bring inverters, battery systems and weather stations onto one monitoring gateway.
• CCTV and PTZ control: send camera control data to two groups of PTZ cameras.

2 Port RS485 Hub Specifications

Getting the Best Performance from Your 2 Port RS485 Hub

On RS485, the lower the baud rate, the further you can run the cable, so long runs across a site work best at 9600 or 19200 baud. Use shielded twisted-pair cable and wire each branch as a straight bus rather than a star. Fit termination resistors at the far end of long lines, and earth the shield at one point only to avoid ground loops. For more on the standards and protocols involved, see these overviews of RS-485 and Modbus.

Installation Tips

1. Mount the 2 port RS485 hub in your control panel or enclosure.
2. Connect the master device (PC, PLC or gateway) to the main RS232/RS485 port.
3. Wire each RS485 branch to the screw terminals, keeping the A (+) and B (-) polarity the same on every device.
4. Connect a DC supply between 9V and 40V.
5. Check that the Power light is on, then watch the TXD and RXD lights as the master polls each branch.

Buy the 2 Port RS485 Hub in Dubai from BAM

Bait Almajara Trading (BAM) supplies connectivity, power and AV accessories to system integrators, contractors, facility managers and corporate procurement teams across the UAE, GCC, Africa and Central Asia. Order the DTECH DT-9022 2 port RS485 hub for a single panel or a multi-building project, with trade pricing on volume and fast dispatch from our Dubai stock. Working with RS232 devices? See our range of RS232 splitters. Explore more connectivity products at BAM, or contact our team for a project quote.

Frequently Asked Questions

What does a 2 port RS485 hub do?

It connects one master device to two separate RS485 branches, so you can wire a network in two directions instead of one long daisy chain.

Can I connect an RS232 device to the main port?

Yes. The main port supports RS232 or RS485, so you can connect either a PC serial port or an RS485 controller.

What power supply does it need?

Any DC supply from 9V to 40V, including standard 12V and 24V panel supplies.

Does it work with Modbus RTU?

Yes. The hub passes serial data at 300 bps to 115.2 Kbps, which suits common RS485 protocols such as Modbus RTU and BACnet MS/TP.

Is it suitable for outdoor or industrial enclosures?

Yes. It operates from -40°C to 85°C and 5% to 95% humidity, with isolation and surge protection on each line.