10 ft M12 / C4 control extension — closes the gap when standard runs fall short.
The Flexstar M12 Extension Cable (4-pin / C4, 10 ft) is a purpose-built control wiring extension for Flexstar fixture networks, designed for runs where the factory-length cable doesn't reach the controller or next fixture in a daisy-chain. Threaded M12 screw-lock connectors seat securely in high-humidity environments and maintain signal integrity across the full 10 ft extension.
The Flexstar M12 Extension Cable — 4-pin, C4 configuration, 10 ft — is a control-wiring accessory designed to extend the signal path between Flexstar LED or HID fixtures and their associated controllers. The M12 circular connector format is an industrial-grade screw-lock standard used widely in automation and commercial lighting control for its secure mating, vibration resistance, and environmental sealing.
The C4 / 4-pin layout carries the control signal lines required for dimming commands, spectrum tuning instructions (on compatible LED fixtures), and scheduling data from the Flexstar controller to each fixture. This cable is not a power cable — it handles low-voltage control communication, not mains supply.
Any licensed cannabis or hemp facility running Flexstar fixtures on a controller network will occasionally find that the standard factory cable run falls short — whether because of non-standard row spacing, high-bay mounting heights, structural obstructions, or simply an unusually long fixture row. Rather than rerouting conduit or repositioning hardware, a 10 ft M12 extension resolves the gap cleanly at the cable level.
Facilities executing retrofits into existing buildings are the most common case: the room layout was not designed around a Flexstar cable map, so extensions are a straightforward field fix. Multi-tier vertical grow installations can also create longer vertical runs between a wall-mounted controller and upper-canopy fixtures, making a 10 ft extension a standard part of the build kit.
The M12 screw-lock connector design provides a positive, tool-free mate that resists pull-out under the cable management forces typical in a working grow room — racking adjustments, canopy work, and routine maintenance all stress cable terminations. The threaded coupling keeps the signal path closed even when cables are incidentally tugged.
At 10 ft, this extension adds meaningful reach without introducing the signal-degradation risk associated with very long daisy-chain runs. For situations requiring more total run length, multiple extensions can be assessed against the Flexstar controller's specified maximum daisy-chain cable distance for the fixture count in use — consult HSC for layout guidance before committing to a cable plan.
On a standard Flexstar-controlled commercial installation, the control cable exits the controller, runs to the first fixture, and daisy-chains fixture to fixture down the row. The factory cable supplied with each fixture is dimensioned for typical row spacing. When row spacing is wider, canopy height is higher, or a controller is positioned off-center from the row, the standard run is short.
Stocking a few M12 C4 10 ft extensions per controller zone is standard practice during commissioning — it eliminates last-minute delays when an individual run comes up short. For facilities planning a new build or expansion, HSC can review the fixture layout and controller placement to estimate the extension count needed before equipment ships, so the full accessory kit arrives with the fixtures.
| Brand | Flexstar |
| SKU | 10-010704-407 |
| Cable Length | 10 ft (approx. 3 m) |
| Connector Type | M12 circular, 4-pin, C4 configuration |
| Connector Coupling | Threaded screw-lock (M12 standard) |
| Function | Control signal extension (dimming / scheduling / spectrum) |
| Compatible Systems | Flexstar controller-based fixture networks |
| Catalog Category | Accessories & Cables |
| Site Section | Lighting & Cultivation |
This cable is designed for Flexstar fixture and controller systems that use the M12 4-pin / C4 control port. If you're unsure whether your specific Flexstar fixture model uses this connector format, contact HSC before ordering — we can confirm compatibility against your fixture SKUs.
Physically yes — M12 extensions can be chained. Practically, the total control cable run in a daisy-chain should stay within Flexstar's specified maximum distance for your fixture count and controller model. Longer total runs can introduce signal attenuation. For runs requiring more than 10 ft of extension, contact HSC so we can review your layout before you commit to a cable configuration.
Control cable only. This extension carries the low-voltage signal between the Flexstar controller and fixtures — it handles dimming commands, scheduling, and spectrum data (on compatible LED models). Mains power to each fixture runs on separate power cabling and is not part of this assembly.
That depends on your row spacing, controller placement, and fixture count. As a general rule, facilities order 1–2 extensions per controller zone as a buffer during commissioning. If you share your fixture layout and row dimensions with HSC, we can help estimate the accessory count before your order ships so you're not short at installation time.
Use the Request a Quote button on this page. HSC handles pricing 1:1 based on your facility's order volume and full equipment list. There's no published MSRP — quote requests are typically turned around same business day.
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