Connect RJ12-port fixtures to Growlink's LINKS automation platform for scheduled, data-driven dimming.
The Growlink Lighting Adapter RJ12 bridges compatible grow fixtures — those equipped with 6-pin RJ12 dimming ports — to the Growlink LINKS ecosystem, enabling intensity control, scheduling, and automated environmental response through Growlink OS. A required accessory when integrating RJ12-equipped fixtures into a LINKS-controlled room.
The Growlink Lighting Adapter RJ12 is a dedicated interface accessory for the Growlink LINKS automation platform. Its function is straightforward: it terminates the RJ12 dimming port found on compatible grow fixtures and passes that connection into the digital lightLINK controller, which in turn communicates with the Growlink HUB and Growlink OS.
RJ12 — a 6-position, 6-conductor (6P6C) registered jack — is a widely used dimming interface across commercial-grade HPS, CMH, and LED fixtures. Fixture brands including Dutch Lighting Innovations (DLI) use standard RJ12 phone cables and RJ12 splitters for their dimming connections, making this adapter the correct termination point when integrating those fixtures into a Growlink-controlled environment.
The adapter itself is compact and purpose-built for continuous operation in grow room conditions, including the elevated humidity and temperature swings common in commercial cultivation facilities.
This part is needed by any licensed cannabis or hemp operator running the Growlink LINKS platform who is integrating fixtures with RJ12 dimming ports. If your grow lights ship with a 6-pin RJ12 dimming connector — rather than an RJ45 port or bare terminal block wires — this is the correct adapter to pair with your digital lightLINK module.
It is also relevant to facilities expanding into Growlink automation from an existing fixture fleet. If the fixtures already in the canopy use RJ12 dimming, this adapter is what bridges that hardware to the LINKS system without requiring a fixture swap. Confirm your fixture's dimming port type against your light's technical manual before ordering — the Growlink ecosystem also offers an RJ45 Dimming Adapter for fixtures with RJ45 dimming connections.
Because the digital lightLINK requires one module per lighting zone, operators with multiple zones should plan adapter quantities to match their zone count and fixture dimming interface type.
The Growlink LINKS system is built around the 8-Port HUB as its central connection point. The digital lightLINK module connects to that HUB and acts as the communication bridge between Growlink OS and the actual fixtures in the room. Fixtures with native RJ12 dimming ports connect to the digital lightLINK via this adapter — devices with compatible RJ12 connectors plug directly into the RJ12 digital lighting port on the lightLINK.
Once connected, the digital lightLINK delivers the full LINKS lighting feature set to those fixtures: intensity control, spectrum adjustment on compatible fixtures, sunrise and sunset ramping, high-temperature adaptive dimming, and schedule-based automation — all managed through Growlink OS and coordinated with climate, irrigation, and substrate data from the rest of the LINKS sensor network.
The result is lighting that responds dynamically to room conditions rather than running on a fixed timer — without requiring a controller change to accommodate existing RJ12-port fixture fleets.
The RJ12 Lighting Adapter is designed for fixtures using the 6-pin RJ12 dimming interface. Dutch Lighting Innovations (DLI) fixtures are a confirmed use case, using standard RJ12 phone cables and RJ12 splitters for their dimming connections. Other commercial fixture brands that have used RJ12-style dimming ports across their product lines include Hydrofarm/Phantom, Luxx, Iluminar, and Gavita — though connector implementation varies by model and production run.
Visually inspect your fixture's dimming port before ordering. RJ11, RJ12, and RJ14 connectors share the same 9.6mm housing and can look nearly identical; the difference is the number of active conductors. Your fixture's technical manual or the manufacturer's dimming spec sheet is the definitive reference. If your fixtures use an RJ45 dimming port instead, the Growlink RJ45 Dimming Adapter is the correct part. If fixtures wire to a terminal block, the digital lightLINK accommodates that directly without an adapter.
| SKU | RJ12 ADAPT |
| Brand | Growlink |
| Product Line | LINKS Accessories |
| Connector Type | RJ12 (6-position, 6-conductor / 6P6C) |
| Compatible Controller | Growlink digital lightLINK (requires Growlink HUB) |
| Installation | Plug-and-play; no tools required |
| Intended Environment | Indoor commercial cultivation / greenhouse |
| Quantity | 1x adapter per order |
| Adapter Pairing Required | Growlink digital lightLINK module (sold separately); Growlink HUB (sold separately) |
Check the dimming port on your fixture. If it has a 6-pin RJ12 port — the same form factor as a telephone jack — this is the correct adapter. If your fixture uses an 8-pin RJ45 port (Ethernet-style), you need the Growlink RJ45 Dimming Adapter instead. If your fixtures have no RJ-style port and use a terminal block, the digital lightLINK connects directly without an adapter.
One digital lightLINK module is required per lighting zone. The RJ12 adapter connects that module to your fixtures. If your fixtures support daisy-chaining their RJ12 dimming signal (with an 'in' and 'out' port or via RJ12 splitters), a single adapter on the first fixture in the chain can control the full zone. Verify your specific fixture's daisy-chain capability with the fixture manufacturer.
The RJ12 Lighting Adapter connects into the Growlink digital lightLINK module. The digital lightLINK in turn connects to the Growlink 8-Port HUB, which is the foundation of every LINKS system. Both the digital lightLINK and the HUB are sold separately. Contact HSC for a complete LINKS system quote if you are speccing a new room.
Hydrofarm and Phantom fixtures controlled by the Autopilot controller series use the same physical RJ12 connector but have a unique internal wiring configuration. Growlink's own documentation notes that these fixtures require connection via the terminal block on the digital lightLINK — meaning the RJ12 cable from the fixture is cut and stripped for terminal wiring — rather than a straight plug-in via this adapter. Confirm with Growlink's wiring diagrams for your specific Phantom model before ordering.
Growlink's digital lightLINK controller, which this adapter pairs with, is noted as made in the USA and designed for commercial cultivation environments. For manufacturing origin specific to this accessory, contact HSC or consult Growlink directly.
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