Binary DB9-M-RJ45-ADPT DB9 to RJ45 Adapter

Product Description

The BINARY DB9-M-RJ45-ADPT is a DB9 male to RJ45 modular adapter used to convert a standard 9-pin serial (DB9) connector interface to an RJ45 modular jack connection. This adapter is commonly used in building automation, HVAC controls, and low-voltage communication systems where RS-232 serial devices need to connect to RJ45-terminated cabling. Licensed low-voltage technicians and controls specialists typically install this type of adapter when interfacing serial communication equipment with structured cabling or modular patch systems.

This adapter fits applications where a DB9 serial port on a controller, thermostat interface, or communication device must terminate to an RJ45 modular connector. It is suited for residential and light commercial controls wiring, building automation panels, and serial device integration projects where modular cabling is the standard infrastructure.

Key Features

• DB9 male connector interfaces directly with standard 9-pin serial ports
• RJ45 modular jack accepts standard 8-position modular plugs
• Compact single-unit adapter eliminates need for additional cabling adapters
• Sold individually as a single unit for targeted replacement or new installation

Compatibility

Designed as an OEM-style adapter for use with DB9 serial communication devices requiring an RJ45 modular connection interface in low-voltage controls and building automation applications.

Installation Notes

Installation is performed by licensed low-voltage or controls technicians in accordance with applicable NEC low-voltage wiring guidelines. Power down or de-energize any connected serial communication device before connecting or disconnecting this adapter. Verify pin-out mapping between the DB9 and RJ45 sides against the connected device documentation before commissioning. Do not force the connector — both the DB9 and RJ45 interfaces should seat firmly without excessive pressure.