The useful distinction
Recognize it. Then verify it.
A small four-position modular housing is commonly found on telephone handsets; trade names are not wiring guarantees. [C113A]
It notes that RJ22 is an unofficial designation. [C113B]
Molex identifies 95501-2441 as a right-angle 4P4C modular jack. Its chart separates 1.02 mm mating-interface pitch from 1.27 mm termination-interface pitch. [C113W]
Source-scoped identification facts
Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.
| Positions / cavity span | 4 (Claim C113A)S091Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Identification and explicitly scoped documentation only; not an end-to-end connection approval |
|---|---|
| Contact pitch | 1.02 mm Manufacturer Pitch-Mating Interface (Molex 955012441 board jack)S982Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Exact Molex 95501-2441 right-angle 4P4C board jack; manufacturer mating-interface pitch only, separate from any unidentified handset plug. |
| Connector role | plug (135-0324)S923Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 135-0324. Documented role: plug. Flat26AWG is accepted wire, not connector pitch or housing dimension. Generic4–8position wording does not transfer8position non-keyed attribute to other forms. |
| Manufacturer | Primex (135-0324)S923Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 135-0324. Documented role: plug. Flat26AWG is accepted wire, not connector pitch or housing dimension. Generic4–8position wording does not transfer8position non-keyed attribute to other forms. |
| Series | Modular Plugs (135-0324)S923Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 135-0324. Documented role: plug. Flat26AWG is accepted wire, not connector pitch or housing dimension. Generic4–8position wording does not transfer8position non-keyed attribute to other forms. |
| Exact part / implementation | 135-0324 (135-0324)S923Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 135-0324. Documented role: plug. Flat26AWG is accepted wire, not connector pitch or housing dimension. Generic4–8position wording does not transfer8position non-keyed attribute to other forms. |
Not recorded: Nominal contacts, Populated contacts, Contact rows, Dimensions / axis, Contact gender / arrangement, Mounting, Coupling / latch, Keying / polarization, Shell / form, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.
Recorded variant and source limits
- Check the exact device manual before wiring or applying power.
Bounded facts, visible unknowns
Specifications and limits
| Documented identification | The C2G guide describes a four-position modular form used on telephone handsets. [C113A] |
|---|---|
| Important distinction | It notes that RJ22 is an unofficial designation. [C113B] |
| Mechanical dimensions | No independently approved mechanical dimensions. Do not use this record for fabrication or fit testing. |
| Engineering pinout | Source-checked engineering profile available; independent review pending. Open engineering profile → |
| Verified device list | Not included. Check exact device and accessory documentation. |
Record the exact device model and the label beside the port. Obtain its manual and the accessory documentation. Keep unknown properties unknown instead of filling them from a visually similar item.
Before you connect
What to check
- Separate the handset socket from the wall-line socket.
- Record the telephone and handset model.
- Verify the approved lead and microphone/speaker wiring rather than substituting by appearance.
Pins & wiring
Pinout
Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.
What the status labels mean
- Confirmed
- Recorded research passes agree within this variant; this is not independent human review or hardware validation.
- Single source
- Only one underlying document, or one pass, supports this assignment.
- Device-specific
- Supported for the named equipment or wiring only. Check your device’s manual.
- Unverified
- Missing or conflicting evidence. Do not wire from this row.
- Not connected
- The source explicitly says NC, no contact or no pin for this wiring.
Numbered pin functions are not yet confirmed. No wiring table is published for this connector.
What is not established
This field note does not approve a connection, publish a pinout or provide a measured template. Use the linked source scope and the checklist as a documentation starting point.
Your next step
Move from the form to the requirement.
The source trail
Evidence for this page
AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.
The C2G guide describes a four-position modular form used on telephone handsets.
C2G / Legrand · Modular connector identification guide ↗S091: full source recordInspect review dependencies → (private workspace)It notes that RJ22 is an unofficial designation.
C2G / Legrand · Modular connector identification guide ↗S091: full source recordInspect review dependencies → (private workspace)Molex identifies 95501-2441 as a right-angle 4P4C modular jack. Its chart separates 1.02 mm mating-interface pitch from 1.27 mm termination-interface pitch.
Molex · Molex 95501 modular-jack series chart, exact4/4,6/4,6/6,8/8 variants ↗S982: full source recordInspect review dependencies → (private workspace)
