Designed & Made in the USA Since 1983
A 4-piece DB9 mini adapter kit covering the most common RS-232 serial connection mismatch scenarios. Includes a female-to-female gender changer, male-to-male gender changer, female-to-female null modem adapter, and male-to-male null modem adapter.
Connector Type – RS-232 DB9
Included Adapters – (4) Mini DB9 Adapters | Female-to-Female Gender Changer | Male-to-Male Gender Changer | Female-to-Female Null Modem Adapter | Male-to-Male Null Modem Adapter
Compatible Interfaces – WedgeLink AT, WedgeLink SP, MobileCollect RS-232 Remote, GageWay Pro (Lever Converter for front channels)
Pin Count – 9-pin
$20.00
A gender changer is a compact inline DB9 adapter that changes the physical sex of a connector — male to female or female to male — while passing all 9 signal pins straight-through with no modification to signal routing. Gender changers are used when two cables or device ports physically cannot mate because both terminate in the same connector gender.
A null modem adapter functions identically to a null modem cable but in a compact, inline form factor. It crosses the Tx and Rx signal lines (along with associated handshaking) between its two connectors. Inserted at the end of a straight-through cable or between two cables, it produces the same signal crossover as a full null modem cable.
The kit covers the four most common RS-232 connection mismatch scenarios in quality and manufacturing environments. If you’re not yet sure whether you need a gender changer or a null modem adapter, our RS-232 Interface Guide explains the DCE/DTE distinction and how signal direction determines the correct cable type.
Scenario | Adapter |
|---|---|
Both cables/ports are female, no signal crossover needed | Male-to-Male Gender Changer |
Both cables/ports are male, no signal crossover needed | Female-to-Female Gender Changer |
Both cables/ports are female, Tx/Rx must be crossed | Male-to-Male Null Modem Adapter |
Both cables/ports are male, Tx/Rx must be crossed | Female-to-Female Null Modem Adapter |
Rather than purchasing separate cables for each scenario, the kit provides all four in one low-cost package — useful for a calibration lab, inspection station setup toolkit, or technician’s troubleshooting kit.
If none of the four adapter configurations resolve the connection issue, the device likely uses a non-standard or proprietary pinout. In that case, the ProAdapter is the appropriate tool — it allows full custom pin assignment without soldering.
Q: What is the difference between the gender changers and the null modem adapters in this kit?
— Gender changers change the physical connector sex while passing all signals straight-through. Null modem adapters additionally cross the Tx and Rx signal lines — and related handshaking — to allow two DTE devices to communicate directly.
Q: Is this kit sufficient for most RS-232 gage interface connection problems?
— For standard pinout mismatches involving connector gender or Tx/Rx reversal, yes. If the connected device uses a non-standard or proprietary pinout, the ProAdapter is the appropriate next step.
Q: Can I use one of these adapters in combination with the DB9 Null Modem Cable?
— Yes. For example, a gender changer from this kit can be used alongside the DB9 Null Modem Cable when the cable gender is also mismatched.
CBL-DB9-ADT-KIT Specs | |
|---|---|
Connector Type | RS-232 DB9 |
Included Adapters | Female-to-Female Gender Changer Male-to-Male Gender Changer Female-to-Female Null Modem Adapter Male-to-Male Null Modem Adapter |
Compatible Interfaces | WedgeLink AT, WedgeLink SP, MobileCollect RS-232 Remote, GageWay Pro (Lever Converter for front channels) |
Pin Count | 9-pin |