RS-232 Interface Module, 3 to 5.5V, RJ-45 Connector



10 days
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Our quantity discounts:

Quantity  5+   10+   25+ 
Price  USD7.61   USD7.10   USD6.45 


Important! Note "Header Type" Option above for selecting pin header! See "Pin Headers" section below for details.

The im232M is a RS-232 interface module. It is part of our iMod product range.  It converts TTL logic levels to RS-232 interface levels, and visa versa. It has a wide operating voltage of 3.0V to 5.5V, low power consumption, and is ESD protected up to 15kV. It enables 3.3V and 5V devices (like a Microcontroller for example) to communicate via the standard RS-232 protocol. It uses the Sipex SP3232EEN RS-232 Transceiver chip. For details download it's datasheet from

The following cable and adapter are avialable for connecting the im232M to a RS-232 device:

  • The ADP45D9F cable adapter. Cable Adapter for converting RJ-45 plug (network cable) to D-Sub 9 pin female connector (serial cable).
  • The CAB8M6FT cable. Serial Cable with RJ-45 plug, and D-Sub 9 pin female connector, 1.8m long.

Only high quality components are used! The SP3232E driver chip is superior to many other RS-232 driver chips that do not have the ESD protection, temperature range or wide operating voltage. We also only use brand name capacitors, like Samsung, Murata, Yageo, TDK or other top brands.

Top View

Bottom View


Schematics (pdf format)

Click to enlarge

The im232M has two rows of standard 2.54mm (0.1") pin headers. The rows are 0.7" apart, allowing this module to be mounted on a breadboard or standard 0.1" grid prototype board. The picture to the right shows some iMod modules mounted on a standard prototype board.

The pin headers supplied or soldered to this board are selected in the "Header Type" option at the top of this page.



  • Meets True EIA/TIA-232-F Standards from a +3.0V to +5.5V Power Supply
  • Interoperable with EIA/TIA-232 and Adheres to EIA/TIA-562 Down to a +2.7V Power Source
  • Minimum 120kbps Data Rate under Load
  • Regulated Charge Pump Yields Stable RS-232 Outputs Regardless of VCC Variations
  • Enhanced ESD Specifications:
    • ±15kV Human Body Mode
    • ±15kV IEC1000-4-2 Air Discharge
    • ±8kV IEC1000-4-2 Contact Discharge
  • Wide Operating Range: 3.0V to 5.5V, and -40°C to +85°C
  • Standard RJ45 (RJ12) connector
  • Pin Header connectors are gold plated for best possible contact
  • High quality assembly, with brand name, quality components. No cheap, “no name brand” components are used!
  • Module dimension: 22.2mm x 19.7mm (0.875" x 0.775")
  • RoHS Compliant
  • Operating Temperature -40°C to + 85°C

Pin Headers



  Web PDF Data
im232M Datasheet and Schematics    

What is included

  • 1 x iMod module, fully assembled, with pin headers (as selected in options above).