DB9 Male to Screw Terminal Board with Shell and Screws

YL-SMM-9M Male to Screw Terminal RS232 / RS485 Converter Module with Protective Shell

The DB9 Male Screw Terminal to RS232/RS485 Conversion Board is a practical and reliable interface module designed to simplify serial communication connections. This adapter converts a standard DB9 male connector into a 9-position screw terminal block, making wiring, testing, and debugging fast and convenient.

Ideal for industrial automation, embedded systems, PLC communication, and project commissioning, this module comes with a protective shell and mounting nuts for secure installation and long-term durability.

Perfect for engineers, technicians, and DIY electronics enthusiasts working with RS232 and RS485 serial communication systems.

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Key Features

• DB9 Male 9-pin serial interface
• 9-position screw terminal block for easy wiring
• Supports RS232 and RS485 serial communication
• Protective shell included
• Mounting nut/screw for secure installation
• No soldering required
• Convenient for project commissioning and debugging
• Durable and compact design
• Suitable for industrial and laboratory use

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Technical Specifications

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Applications

• PLC communication systems
• Industrial automation equipment
• Serial debugging and testing
• Embedded systems projects
• CNC and control systems
• Data acquisition systems
• RS232 / RS485 device commissioning
• Educational and lab use

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Precautions

• Ensure correct pin mapping before wiring
• Do not exceed RS232/RS485 voltage specifications
• Tighten terminal screws securely to avoid loose connections
• Use proper grounding to prevent communication errors
• Avoid short circuits during installation
• Install in dry and non-humid environments