R&M Connection Module RJ45/u C6 CL SP — 10-Piece Pack (R878843
The R&M Connection Module RJ45/u C6 CL SP is a compact RJ45 coupler built with a zinc die-cast housing, supplied in a 10-piece pack for efficient multi-port installation. It’s engineered as one of the most space-efficient RJ45 couplers on the market, letting installers fit more connection points into dense patch panels, faceplates, and rack systems without sacrificing performance. The coupler’s adaptable design works across multiple mounting platforms — Key-Stone, Snap-In, Adapter No.1, and Freenet — giving installers flexibility to standardize on a single coupler across different R&M product lines rather than sourcing separate parts for each platform. It fully meets the ISO/IEC 11801 EA Channel / Permanent Link standard and PoE class requirements, making it suitable for the fastest current LAN transmission technology, 10GBase-T.
Design and Construction
The coupler’s defining feature is its zinc die-cast housing, a departure from the plastic housings used on many standard RJ45 keystone modules. Zinc die-cast construction gives the coupler high mechanical stability in a notably compact form factor, making it well suited to installations where port density matters — such as high-count patch panels or faceplates with limited physical space per port. The coupler uses a DA (Direct Attached) basic interface, connecting directly rather than requiring an intermediate cabling stage.
Platform Compatibility
A key advantage of this coupler is its adaptable mounting system, supporting four distinct platforms through interchangeable adapters:
- Key-Stone — for standard keystone-style faceplates and patch panels
- Snap-In — for R&M’s snap-in adapter patch panel systems, such as the BASIC and HD panel ranges
- Adapter No.1 — for R&M’s Adapter No.1 mounting standard
- Freenet — for Freenet-compatible outlets and panels
This multi-platform compatibility means the same coupler can be deployed across a mixed R&M installation — patch panels, faceplates, and outlet systems — without needing to stock a different coupler variant for each mounting type.
Standards Compliance and Performance
The coupler fully meets the ISO/IEC 11801 standard for both EA Channel and Permanent Link configurations, along with the relevant PoE class requirements. This level of compliance qualifies it for use in 10GBase-T deployments, the current fastest widely deployed copper LAN transmission standard, making it a forward-compatible choice for networks anticipating higher bandwidth needs.
Installation Characteristics
Thanks to its Direct Attached (DA) interface and adaptable mounting system, the coupler installs into any of its four supported platforms using the corresponding adapter, without requiring specialized tools beyond what’s already used for standard R&M module installation. The 10-piece pack format suits installers populating multiple ports in a single job, reducing the need for repeat ordering on mid-to-large installations.
Supported Applications
- High-density patch panels, where compact coupler housing helps maximize port count in limited rack space
- 10 Gigabit Ethernet (10GBase-T) deployments, where EA Channel and Permanent Link compliance is required
- PoE-powered device installations, such as IP cameras, access points, and VoIP phones sharing the same cabling infrastructure
- Mixed R&M platform installations, standardizing on one coupler across Key-Stone, Snap-In, Adapter No.1, and Freenet systems
Who This Module Is Best Suited For
- Data center and structured cabling technicians building high-density patch panels where compact coupler housing helps maximize available port space
- Network installers standardizing on R&M’s ecosystem, using one coupler across multiple mounting platforms instead of stocking separate parts per system
- IT infrastructure managers upgrading to 10 Gigabit Ethernet, needing EA Channel and Permanent Link-compliant couplers for future-proofed network performance
- Contractors handling PoE-heavy installations, such as IP surveillance or VoIP rollouts, where full PoE class compliance is required at every connection point
Specifications
| Attribute | Detail |
|---|---|
| Part Number | R878843 |
| Product Type | RJ45 Coupler / Connection Module |
| Pack Quantity | 10 pieces |
| Housing Material | Zinc die-cast |
| Basic Interface | DA (Direct Attached) |
| Supported Mounting Platforms | Key-Stone, Snap-In, Adapter No.1, Freenet |
| Standards Compliance | ISO/IEC 11801 (EA Channel / Permanent Link) |
| PoE Compliance | Meets applicable PoE class requirements |
| Bandwidth Support | 10GBase-T ready |
| Key Attributes | High mechanical stability, very compact form factor |


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