DTECH DT-5044 4 Port RS232 Splitter – 1 DB9 Input to 4 DB9 Outputs

The DTECH DT-5044 4 port RS232 splitter lets one host control four serial devices from a single DB9 port. It’s the simple way to connect one PC, control processor or NVR to four displays, projectors, readers or controllers without adding interface cards, extra PCs or custom software. One DB9 female input feeds four DB9 male outputs, and the included 5V adapter keeps the signal stable across every port.

Why Choose This 4 Port RS232 Splitter for Your Project

Most control and security equipment still uses RS-232, and most hosts have only one serial port. When four devices need the same commands, the usual fixes are expensive and slow to set up: extra controllers, USB-to-serial adapters on several PCs, or custom programming. This 4 port RS232 splitter handles it in hardware at the connector, so a single command reaches every device at once.

• One host, four devices: send commands from one PC, controller or recorder to four serial devices at the same time.
• Consistent commands everywhere: every connected unit gets the same instruction together, so displays, projectors or panels stay in step.
• No drivers or software: the hardware design works with any operating system or control platform.
• Powered for reliability: a DC 5V, 1000mA external adapter drives the outputs, so the signal holds up across all four ports.
• Scales with the site: units can be cascaded, so one host can reach more devices as a project grows.
• Built for racks and panels: the compact 218 x 82 x 38 mm, 420 g enclosure fits neatly in a cabinet, rack or control room desk.

Where Integrators Use the DT-5044 4 Port RS232 Splitter

System integrators, AV installers, MEP contractors and facility management teams use a 1×4 serial splitter wherever one control source needs to reach several endpoints. Typical applications include:

• Meeting and conference rooms: send power, input and volume commands from one control processor to four displays or projectors.
• Central control systems: link building management, lighting or HVAC controllers to four serial devices from a single head-end.
• Computer-based system control: run four instruments, displays or test units from one PC serial port.
• CCTV and security: connect a DVR, NVR or matrix to several PTZ keyboards, alarm panels or access controllers.
• Digital signage and control rooms: keep a wall of serial-controlled screens switching and powering on together.

4 Port RS232 Splitter Specifications

How to Get the Best Results from Your 4 Port RS232 Splitter

The host sends to all four output ports at the same time. This suits broadcast-style control, such as powering on displays or switching inputs across a room. If your devices also report back, poll them one at a time rather than letting several reply at once. Most control processors do this by default. Keep cable runs within about 15 metres, and match the baud rate and data format on the host and every device. For background on serial wiring, see these overviews of the RS-232 standard and the DB9 (D-subminiature) connector.

Installation Tips

1. Connect your host device (PC, controller or NVR) to the DB9 female input.
2. Connect up to four serial devices to the DB9 male outputs.
3. Plug in the 5V power adapter.
4. Set the host and all devices to the same baud rate and data format, then test each port.
5. For more than four devices, cascade a second unit from one of the outputs.

Buy the 4 Port RS232 Splitter 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-5044 4 port RS232 splitter for a single room or a full project roll-out, with trade pricing on volume and fast dispatch from our Dubai stock. Only need two outputs? See our 2 port RS232 splitter. For larger systems, 8 port RS232 splitters are also available. Explore more connectivity products and AV accessories at BAM, or contact our team for a project quote.

Frequently Asked Questions

Does the 4 port RS232 splitter need drivers or software?

No. It’s a hardware device, so it works with any operating system or control platform and there’s nothing to install.

Does it need external power?

Yes. It runs on DC 5V, 1000mA, and the power adapter is included in the box.

How far can I run the cables?

The communication distance is generally around 15 metres. For best results, keep runs short and use good-quality shielded serial cable.

Can I connect more than four devices?

Yes. The DT-5044 supports cascading, so you can add a second splitter to reach more devices.

What baud rate does it support?

It supports data rates up to 19.2 Kb/s. Its default format is 9600 baud, 8N1, which most control equipment uses.