2 Port RS232 Splitter – 1 DB9 Male Input to 2 DB9 Female Outputs DTECH DT-5047

The DTECH DT-5047 2 port RS232 splitter lets one host control two serial devices from a single DB9 port. You can add a second controller, logger or monitoring unit without rewiring, adding a PC or buying extra interface cards. It takes one DB9 male input and splits it into two DB9 female outputs. It passes data at any baud rate with no delay and supports cascaded runs of up to 25 metres.

Why Choose This 2 Port RS232 Splitter for Your Project

Many building, security and industrial systems still rely on RS-232 serial control, and most of that equipment has only one serial port. When a second device needs the same data stream, the usual workarounds are costly: a new controller, a USB-to-serial adapter on another PC, or custom software. This 2-port RS232 splitter solves the problem in hardware, in minutes, right at the connector.

• One host, two devices: send commands from a single PC, NVR or controller to two serial devices at the same time.
• Works with what you already have: the full hardware design needs no drivers, configuration, or on-site software.
• Any baud rate, any protocol: the signal passes through untouched, so it suits proprietary control protocols as well as standard ASCII command sets.
• Zero added latency: data is sent and received without delay, so time-sensitive control and monitoring stay in sync.
• Room to scale: units can be cascaded, with a maximum output transmission distance of 25 metres.
• Built for the plant room: the compact, metal-finish housing sits neatly in a rack, cabinet or control panel.

Where Integrators Use the DT-5047 2 Port RS232 Splitter

System integrators, MEP and electrical contractors and facility management teams use a serial splitter wherever one control source needs to reach two endpoints. Typical applications include:

• Access control systems: share a controller’s serial output with a second reader, panel or logging terminal.
• CCTV and surveillance: connect a DVR or NVR to two PTZ keyboards, matrix controllers or alarm interfaces.
• Street lighting and energy management: link remote power-saving controllers to a local display and a monitoring unit.
• Environmental and noise monitoring: feed one sensor or monitor to two recorders or data loggers.
• SMS controllers and alarm diallers: send serial alerts to two systems at once.
• AV and control rooms: send RS-232 commands from one control processor to two displays or projectors of the same model.
• Laptops and PCs: test, configure or mirror two serial devices from a single notebook in the field.

2 Port RS232 Splitter Specifications

How the 2 Port RS232 Splitter Handles Two-Way Data

The unit supports two-way communication, which matters when your devices report status back to the host. The host can send to both output ports at the same time. The two connected devices can also reply to the host, but they shouldn’t transmit at exactly the same moment, so allow a short gap between their responses. This suits most poll-and-response control systems, where the host queries each device in turn. If you’re new to serial wiring, these overviews of the RS-232 standard and the DB9 (D-subminiature) connector explain pinouts and signal levels.

Installation Tips

1. Connect your host device (PC, controller or NVR) to the DB9 male input, using an extension cable if needed.
2. Connect each serial device to one of the two DB9 female outputs.
3. Check that both devices use the same baud rate and data format as the host, then power up and test.
4. For longer runs, cascade units and keep the total output cable length within 25 metres.

Buy the 2 Port RS232 Splitter in Dubai from BAM

Bait Almajara Trading (BAM) supplies connectivity, power and AV accessories to integrators, contractors, facility managers and corporate procurement teams across the UAE, GCC, Africa and Central Asia. Order the DTECH DT-5047 2 port RS232 splitter for single projects or in bulk, with trade pricing on volume and fast dispatch from our Dubai stock. Need to reach more devices? 4-port and 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 2 port RS232 splitter need drivers or software?

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

Can both connected devices send data back at the same time?

The host can send to both devices at once, but the two devices should respond at different times. Poll-and-response systems handle this automatically.

What is the maximum cable distance?

The splitter supports cascading, with a maximum output transmission distance of 25 metres.

Will it work with my baud rate and protocol?

Yes. The DT-5047 supports any baud rate and any protocol format and passes data through untouched.