InLine 92504K wire connector 3.5 mm 4-pin jack TRRS / Terminal block 4 terminals Black, Green

Time savings during installation:Quick wiring via screw terminals for 18–26 AWG – tool-assisted with flat-head screwdriver ≤ 2.5 mm.
Precise contacting of audio/microphone signals: 3.5 mm jack socket (TRRS, 4-pin) with clearly labeled terminal strip (L, R, V, +) – ideal for headset, audio, or control cables in test and prototyping setups.
Side terminal strip for space-saving installation: Compact connection block with adjacent terminals – ideal for limited space, e.g., in test boxes or distribution panels.
Versatile use in industry: For integrating analog audio signals into control units, multimedia modules, development labs, or test benches.
High signal quality: An insulation resistance of ≥ 10 MΩ at 300 V DC and a rated current of up to 1 A per pin ensure reliable signal transmission – even in continuous operation.

The InLine® 3.5 mm 4-pin jack-to-terminal block adapter enables solder-free connection of analog audio and microphone signals to screw terminals – ideal for headsets, combo plugs, or TRRS interfaces in industry and laboratories.
The connections are clearly labeled:
L(left), R(right), V(microphone/voltage), +(common ground/shielding).
The screw terminals with a 5.0 mm grid size support 18–26 AWG wires and can be connected using a flat-blade screwdriver ≤ 2.5 mm.
Thanks to its compact design, the jack socket is particularly suitable for space-critical applications in test equipment, audio racks, or embedded systems. An EVA insulating layer provides additional protection when mounted on a conductive surface.

Jack connection:3.5 mm TRRS jack socket (4-pin, stereo/microphone)
Number of poles / terminal assignment:4 terminals / L, R, V, +
Connection technology:Screw terminal with pressure plate, 5.0 mm pitch
Connection range:18–26 AWG
Actuation:With flat-blade screwdriver ≤ 2.5 mm
Rated current: 1.0 A per pin
Max. operating voltage:100 V between two signals
Insulation resistance:≥ 10 MΩ @ 300 V DC
Max. conductor resistance:5 ohms
Operating temperature:–10 °C to +70 °C
Insulation layer:EVA insulation on underside

InLine 92504K. Connector(s): 3.5 mm 4-pin jack TRRS / Terminal block 4 terminals, Product colour: Black, Green, Connector gender: Female/Female. Compliance certificates: RoHS, TÜV mark. Dimensions (WxDxH): 23 x 36 x 12 mm, Weight: 9 g, Width: 23 mm. Quantity per pack: 1 pc(s), Package volume: 100 cm³, Package type: Polybag. Country of origin: Taiwan

How to use

Insert a 3.5 mm TRRS plug into the jack socket and connect stripped wires (18–26 AWG) to the corresponding screw terminals labeled L (left), R (right), V (microphone/voltage) and + (ground/shield). Secure each conductor with the screw terminal using a flat‑blade screwdriver (≤ 2.5 mm). Ensure correct wiring and tighten screws to obtain reliable contact; do not exceed the rated current and voltage.

Recommendations

For best signal reliability, use copper conductors within the specified AWG range, avoid excessive bending at the connection points, and mount the adapter on a non‑conductive surface or rely on the EVA insulation if mounting on conductive surfaces. Verify wiring assignments before powering connected equipment.