4-Channel lightLINK

What It Is

The Growlink 4-Channel lightLINK is an analog lighting zone controller built for commercial and advanced cultivation environments. It is part of the Growlink LINKS ecosystem — a modular hardware platform that centralizes lighting, climate, irrigation, and nutrient control under a single Growlink OS interface.

Each of the four outputs delivers a 0–10V analog signal independently, meaning zone one can run at 50% intensity while zones two through four run at 100%, or any other combination. The signal is compatible with any fixture or ballast driver that accepts a standard 0–10V dimming input — including dimmable LED drivers and dimmable HPS ballasts widely used in licensed cannabis and greenhouse production.

The unit is powered at 24V DC through the LINKS HUB connection and is made in the USA. Wall mounting hardware is included; an optional DIN rail mounting kit is available separately for facilities building out structured electrical panels or control enclosures.

Who It's For

This module is the right fit for licensed cannabis and hemp operators running 0–10V dimmable fixtures — LEDs, dimmable HPS ballasts, or mixed setups across multiple rooms or zones — who want to move from manual dimmer switches or standalone timers to centralized, automated lighting control.

Facilities with multi-room layouts benefit most: each channel maps to a discrete lighting zone, so veg and bloom rooms can run separate intensity and photoperiod schedules simultaneously from one platform without additional controllers. At up to 50 fixtures per channel, a single lightLINK module can manage a substantial canopy footprint before a second unit is needed.

Operators already running or speccing Growlink OS for climate or irrigation will find the lightLINK a natural extension — the same platform, the same app, the same recipe logic extended to cover light intensity. If your operation is not yet on Growlink, note that the LINKS HUB (sold separately) is required to operate this module.

Key Features

Four truly independent 0–10V outputs mean dimming decisions on one zone have zero effect on adjacent channels. Each channel outputs up to 0.125 mA, with a combined system maximum of 0.5A — sizing that covers ballast dimming signals, variable speed drives, and other analog voltage-controlled devices beyond fixtures alone.

Integration with Growlink OS enables automation that manual dimming cannot match: scheduled photoperiod changes, automated sunrise and sunset intensity ramping, and crop-cycle lighting recipes applied consistently across every zone every day. Remote access through the Growlink app means a facility manager can adjust or monitor all four zones without being on-site.

The enclosure is built for demanding grow environments — high humidity, dust, and temperature swings common in licensed production facilities. Optional DIN rail mounting supports clean, modular panel builds, while the included wall hardware keeps installation straightforward for operations that don't require panel integration.

How It Fits a Build

The lightLINK sits between your LINKS HUB and your fixtures. The HUB powers and communicates with the module; the four 0–10V output leads wire directly to the dimming input terminals on your fixture drivers or ballasts. One HUB supports up to eight LINKS devices total, so the lightLINK occupies one of those eight ports — leaving room for climate sensors, relay modules, valve controllers, and other LINKS hardware in the same ecosystem.

For facilities running fixtures with digital communication protocols (rather than 0–10V analog), Growlink's digital lightLINK module handles that side of the stack. The two can coexist on the same HUB, making it practical to automate a facility running both analog-dimmed HPS rooms and digitally-controlled LED rooms from one Growlink OS instance.

If your operation is expanding canopy, adding a room, or commissioning a new facility, the lightLINK scales with it — add a second module to the HUB to cover additional zones without any change to the software configuration. Contact HSC to discuss module quantities, HUB configuration, and overall Growlink system design for your build.