Specification Review
Align category, shielding, cable fit, contact plating and application requirements.
RJ9 Modular Plug
RJ9 4P4C Handset Modular Plug Telephone Connector 1U Gold Plated
RJ9 4P4C handset modular plug designed for telephone handset cords and communication equipment. Features 1U gold plated contacts, durable PC housing, and supports 0.75–1.0mm conductors for reliable voice transmission and long-lasting performance.
SKU Variants
DT-111
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Engineering reviewSpecification and application alignment
OEM / ODM optionsLabel, packaging and configuration support
Sample-based approvalConfirm critical details before production
Product Overview
Review the construction, options and application notes before requesting a sample or quotation.
| Item | Specification |
|---|---|
| Product Name | RJ9 4P4C Handset Modular Plug |
| Model | DT-111 |
| Brand | Detwiler Tech / OEM / ODM |
| Product Type | Telephone Handset Modular Plug |
| Connector Type | RJ9 4P4C |
| Shielding Type | UTP (Unshielded Twisted Pair) |
| Wire Core Hole | 1.0mm |
| Supported Conductor Diameter | 0.75–1.0mm |
| Supported Cable Type | Telephone Handset Cable |
| Contact Material | Copper Alloy with Nickel Plating |
| Contact Plating | 1U Gold Plated |
| Housing Material | PC (Polycarbonate) |
| Flame Rating | UL94-V2 |
| Electrical Rating | 250V AC, Max 2A |
| Contact Resistance | ≤20mΩ |
| Insulation Resistance | ≥500MΩ (1000V DC / 1 min) |
| Dielectric Strength | 1000V DC / 1 min |
| Pull Test | ≥89N (20 lbs for 1 min) |
| Durability | ≥2000 mating cycles |
| Operating Temperature | -40℃ ~ +125℃ |
| Certifications | UL / CSA / CE / SGS / RoHS / ISO9001 |
| Packaging | Box / Bag |
| HS Code | 8536901100 |
| OEM/ODM | Supported |
| Option | Available Choices |
|---|---|
| Gold Plating | FU, 1U, 3U”, 15U”, 30U”, 50U” |
| Packaging | Box, Bag, OEM Custom Packaging |
| Logo Printing | Detwiler Tech / OEM / ODM |
Product Description
Product Overview
The DT-111 RJ9 4P4C handset modular plug is specifically designed for telephone handset cords, desk phones, call center equipment, and communication devices. Featuring gold plated contacts and a durable PC housing, it ensures stable voice transmission and reliable connectivity.
Key Features
- RJ9 4P4C connector for telephone handset applications
- Designed for handset cords and communication devices
- 1U gold plated contacts for reliable signal transmission
- 1.0mm core hole for easy cable termination
- Supports 0.75–1.0mm conductor diameter
- Durable PC housing with UL94-V2 flame resistance
- High durability exceeding 2000 mating cycles
- Wide operating temperature range: -40℃ to +125℃
- Certified by UL, CSA, CE, SGS, RoHS, and ISO9001
Applications
- Telephone handset cords
- Office desk phones
- PBX systems
- Call center headsets and phones
- VoIP telephone equipment
- Communication and telecom devices
OEM & ODM Service
Detwiler Tech provides professional OEM/ODM manufacturing services, including custom logo printing, packaging design, and bulk production solutions for telecom distributors, communication equipment manufacturers, and system integrators worldwide.
Buyer specification guide
Match an RJ9 4P4C handset plug to the cord and equipment
An RJ9 4P4C handset plug should be approved against the cord dimensions, four-contact wiring sequence and mating equipment. Use a drawing or terminated sample to reduce interface risk.
Information to confirm before quotation
- Four-position, four-contact wiring assignment and equipment interface
- 0.75–1.0 mm conductor fit, cord shape and insulation diameter
- 1U contacts, PC housing, sample quantity, marking and packaging
Frequently asked questions
What does 4P4C mean on an RJ9 handset plug?
It identifies four positions and four contacts. The conductor order must still match the handset cord and the connected equipment.
Which details are needed to approve an RJ9 handset plug?
Provide cord dimensions, conductor construction, insulation diameter, wiring sequence, mating interface and the intended crimping tool.
See the Product from Every Critical Angle
Inspect the housing, contacts, termination interface and assembly details before sample approval.
Control the Critical Steps Before Production
A practical sourcing workflow for structured cabling products, from requirement review to repeat orders.
Sample Approval
Confirm the agreed construction, appearance and packing before volume production.
Process Visibility
Define inspection points and acceptance requirements for the ordered configuration.
OEM / ODM Coordination
Coordinate private labels, packaging, barcodes and approved product variants.
RFQ / SAMPLE REQUEST
Tell Us What the Application Requires
Share the target specification, quantity, cable construction and OEM/ODM requirements. Our team will review the critical interfaces before quotation.
- Product and cable compatibility review
- Sample, lead-time and packaging discussion
- Clear follow-up for export projects
CUSTOMER DISCUSSION
Product Questions & Customer Discussion
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