Matrix M12 Extension Cable 4pin/C4 - 10ft

What It Is

The Matrix M12 Extension Cable C4 is a 10-foot, 4-pin M12 extension cable purpose-built for Matrix LED and Hybrid grow light control wiring. It sits within Matrix's broader M12 cable ecosystem — which spans daisy chain cables (A3/A4), RJ11/RJ12 adapter cables (B3/B4), and these C-series extension cables in both 3-pin (C3) and 4-pin (C4) configurations.

The C4 designation means this cable carries the 4-pin interface — use it specifically at connection points in your Matrix build that require a 4-pin M12 port. It is not interchangeable with the 3-pin C3 variant. If your fixture's control port is 4-pin, this is the correct extension; using the wrong pin count will result in an incomplete or non-functional connection.

Both ends terminate in M12 connectors that thread and lock mechanically into the fixture or controller port. This is the same connector standard used across Matrix's daisy chain and adapter cable lineup, so the C4 extension integrates cleanly into a properly wired Matrix installation without requiring additional hardware.

Who Needs It

Any Matrix LED or Hybrid installation where the standard control cable doesn't reach the next fixture or the controller — due to row length, ceiling height, fixture spacing, or an irregular room layout. Commercial cultivation facilities with longer bays, multi-tier vertical grows, or production rooms where the controller is mounted at a distance from the fixture chain are the primary use cases.

It's also a practical stocking item for operations that are phasing in additional fixtures over time. As you expand a control run — adding fixtures to an existing Matrix chain — the C4 extension lets you bridge gaps in the wiring without rerouting the entire run or pulling new cable infrastructure.

This cable is part of the Matrix OEM cable accessory lineup, meaning it's built to the same spec as the cables that ship with Matrix fixtures. If you're already running Matrix LED or Hybrid fixtures and need to extend a 4-pin control run, this is the correct part.

Construction & Fit

M12 twist-lock connectors at both ends seat mechanically when rotated into the port — not friction-dependent like a push-fit cable. In a working grow room with humidity swings, vibration from HVAC, and the general activity of a harvest cycle, a mechanical lock is a meaningful reliability advantage over a connector that simply presses in.

The cable jacket and connectors are moisture-resistant, built for the condensation and elevated relative humidity typical of sealed cultivation environments. The construction does not degrade with repeated humidity cycling, and the contacts are protected from the corrosion that can occur in grow rooms where push-fit or unprotected connectors are left exposed.

Installation is plug-and-play on both ends — no crimping, no tools, no configuration. Insert, rotate to lock, verify seating. The C4 extension adds exactly 10 feet of usable run length to your existing Matrix 4-pin control wiring segment.

How It Fits a Matrix Build

Matrix lighting systems — including the LED bar and Hybrid fixture lines — use M12 connectors as the standard interface for fixture-to-fixture daisy chaining and controller-to-fixture communication. The MC5 controller connects to the first fixture in a chain via an RJ12-to-M12 adapter cable; subsequent fixtures link in sequence via daisy chain cables. The C4 extension cable inserts into that chain wherever an additional 10 feet of reach is required.

The 4-pin interface is specific to certain fixture models and connection points within the Matrix lineup. Confirm the pin count at your connection point before ordering — Matrix 4-pin ports require the C4; 3-pin ports require the C3. Mismatching pin counts is the most common wiring error in M12 cable installations.

For large commercial builds with many fixtures per controller zone, keeping the correct extension cables on hand prevents installation delays when a run comes up a few feet short. Request a quote through HSC and we can confirm the right cable type for your specific Matrix fixture model and controller configuration.