Spring coil cord RJ11 4P4C plug strain relief free end custom data transfer telephone cable
Professional Spring Coil Cord with RJ11 4P4C Plug
Engineered for reliable data transfer and crystal-clear telephone communication, our spring coil cord features a durable RJ11 4P4C connector with strain relief for secure connections. The 22-24AWG copper conductors ensure minimal signal loss (<0.5dB) with 95%+ conductivity, while the spring coil design provides 3:1 stretch ratio for flexible deployment in office environments.
Key Features: • Strain relief for durability • Free end for custom configuration • High-flex spring coil design • RJ11 4P4C standard compatibility
Technical Specifications
- Product ID: 389
- Connector Type: RJ11 4P4C
- Cable Type: Spring coil telephone cable
- Conductor: 22-24AWG copper
- Strain Relief: Reinforced connector housing
- Jacket Material: Flexible PVC
Customization Options
Color options: Fully customizable to match your equipment
Length variations: Tailored to specific installation needs
Connector types: Special configurations available
Recommended Applications
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Office Telephone Systems
Connecting desk phones to PBX systems with flexible positioning
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Data Transmission
Low-speed data transfer between legacy equipment and modems
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Call Center Equipment
Headset connections with durable spring coil for repeated movement
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Security Systems
Alarm panel connections requiring flexible, durable cabling
Performance Advantages
Superior Durability
Strain relief design withstands 10,000+ flex cycles without failure
Flexible Deployment
Spring coil design extends up to 3x length when needed
Secure Connection
4P4C connector ensures positive locking with <0.5Ω contact resistance
Custom Configurable
Free end allows for termination to specific equipment requirements
Technical Reference
Pin Configuration
- Pin 1: Primary transmit line (tip)
- Pin 2: Primary receive line (ring)
- Pins 3-4: Secondary lines (when configured for 4-wire)
Compatibility Note
Compatible with most RJ11 telephone systems, PBX equipment, and legacy data transmission devices requiring 4P4C connectors.
Note: Not compatible with RJ45 (8P8C) ports - verify your equipment requirements
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Quality Assurance
Each cable undergoes rigorous continuity testing and mechanical stress testing to ensure reliable performance in professional environments.




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How to custom your own wire harness?
Send your sample or drawing/schematic for quote price→ Feedback with quotation(1~3 days) → Confirm quotation → Arrange sample you for approval→ [Make mold if needed (7 days) →Mold test] → Making samples(1~3 days)→Samples test(Approval) →place order for Mass production(2~3 weeks)→Quality checking→Packing →Delivery →After Service →Repeat Order.