Generic Serial DB9 RS232/485 9-Pin Female Terminal Adapter - Screw Terminal Breakout

Name: Generic Serial DB9 RS232/485 9-Pin Female Terminal Adapter - Screw Terminal Breakout
Brand: Generic
SKU: SENS-2878
Price: 104.00 INR
Availability: OutOfStock

₹104.00 (Inclusive of all taxes)

Out of Stock

This DB9 female to screw terminal breakout adapter provides direct pin access for RS232 and RS485 serial communication protocols, enabling easy wiring and signal testing for industrial PLCs, SCADA systems, and embedded development platforms like Arduino and Raspberry Pi.

Features

DB9 Female (9-pin D-Sub) connector to 4+5 position screw terminal block interface.
Compatible with RS232 and RS485 serial communication standards for direct signal breakout.
Accepts 24–12 AWG wire range with 5.08 mm terminal pitch for secure, reliable connections.
Plated metal contacts and FR4 PCB ensure durable, low-resistance signal paths.
Ideal for field testing, prototyping, and wiring industrial serial communication devices.

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Description

This adapter is a passive breakout module designed to interface a standard DB9 female serial port with screw terminal connections. It provides direct electrical access to all nine pins, facilitating easy wiring, signal monitoring, and troubleshooting for RS232 and RS485 communication lines without performing any active signal conversion or conditioning.

Constructed with a robust FR4 fiberglass PCB and screw terminals rated for 24–12 AWG wire, it ensures a secure and stable mechanical connection. The plated metal contacts maintain good conductivity and resist oxidation, supporting reliable data transfer in industrial, laboratory, and prototyping environments where serial port access is required.

Key Features

Direct DB9 female to screw terminal breakout for RS232/RS485 pin access.
High-quality screw terminal block with 5.08 mm pitch for secure wire clamping.
Plated copper alloy contacts for excellent conductivity and corrosion resistance.
FR4 fiberglass PCB provides mechanical strength and electrical insulation.
Simplifies wiring for industrial automation, data acquisition, and device debugging.
Compact design for integration into control panels, test benches, and prototype enclosures.

Applications

Wiring and debugging RS232/RS485 ports on industrial PLCs and SCADA systems.
Prototyping serial communication interfaces for embedded systems (Arduino, Raspberry Pi).
Creating test harnesses and breakout cables for data acquisition and signal monitoring.
Connecting legacy serial devices to modern terminal blocks within control panels.
Facilitating field service and maintenance of serial communication equipment.

Technical Specifications

Product Type	DB9 Female Serial Terminal Adapter
Connector	DB9 (9-Pin D-Sub Female)
Protocol	RS232 / RS485
Interface	DB9 to Screw Terminal Block
Terminal Pitch	5.08 mm
Wire Range	24–12 AWG
Input Voltage (Terminal Rating)	240V
Contact Material	Plated metal (copper alloy)
PCB Material	FR4 fiberglass
Dimensions (L x W x H)	45 x 31 x 19 mm
Weight	21 g

Frequently Asked Questions

Does this adapter perform signal conversion between RS232 and RS485?

No, this is a passive breakout adapter. It provides direct electrical connections from the DB9 pins to the screw terminals. It does not contain active circuitry for signal level conversion, protocol translation, or isolation. You must ensure the connected devices use compatible voltage levels and protocols (e.g., RS232 or RS485).

What is the maximum voltage and current rating for the screw terminals?

The terminals are rated for an input voltage of up to 240V AC/DC. The current rating is primarily limited by the wire gauge (24-12 AWG) and the terminal's construction. For typical RS232/RS485 data signals, which operate at low currents (usually below 100mA), this rating is more than sufficient. For power connections, consult the specific terminal specifications.

How do I wire this adapter for a standard RS232 connection?

Map the DB9 pins to their corresponding screw terminals according to the RS232 standard. Common connections include Pin 2 (RX Data), Pin 3 (TX Data), and Pin 5 (Signal Ground). Refer to the pinout diagram typically silkscreened on the PCB or provided in documentation. Ensure your cable and device follow the same data direction (DTE vs. DCE) convention to avoid cross-wiring.

Can I use this with 3.3V or 5V microcontroller systems like Arduino?

Yes, but with caution. This adapter is a passive connector. You can use it to interface a DB9 port with your microcontroller's serial pins (UART). However, you must use external level shifters or converter modules to match the voltage levels, as RS232 signals use bipolar voltages (e.g., ±3V to ±15V) which can damage 3.3V/5V logic. For direct TTL-level UART connections, ensure the connected device also uses TTL logic.