quadLINK Controller

What the quadLINK Is

The quadLINK is a four-outlet smart switching module purpose-built for the Growlink LINKS ecosystem. It delivers four independent NEMA 5-15R receptacles, each rated at 120VAC/6A with a 9A combined maximum draw, managed individually through Growlink OS. The unit connects to the facility's LINKS HUB over a standard RJ-45 cable — consuming a single HUB port while multiplying your controllable device count by four — or it can operate as a standalone device over a secured 2.4 GHz Wi-Fi network when wired infrastructure isn't available.

Each outlet supports three distinct control modes without any additional configuration: manual on/off, time-based scheduling, and sensor-triggered automation driven by live data from other devices in your Growlink network. Industrial-grade relays rated for over 100,000 switching cycles back the design. Per-receptacle LED status indicators and a Wi-Fi status LED give at-a-glance hardware confirmation without pulling up the app. Made in the USA.

Who It's For

The quadLINK is sized for licensed cannabis and hemp operators who are already running — or building toward — a centralized Growlink automation stack. It fits anywhere you have a cluster of 120VAC ancillary devices that currently rely on manual timers, separate smart plugs, or crew-dependent on/off routines: vegetation rooms, flower rooms, propagation spaces, greenhouse bays, and nutrient mixing stations.

Multi-room facilities benefit most, because the HUB-connected architecture means each quadLINK in each room feeds data back to a single Growlink OS dashboard. Operators managing multiple zones, facilities, or rooms under one license can monitor device state, review run logs, set alerts, and push firmware updates remotely through the Growlink mobile app — without traveling to the floor. It's also a practical expansion path for builds already using Growlink canopyLINK, terraLINK, or lightLINK hardware, since all LINKS devices share the same HUB and OS layer.

Key Features for Commercial Operations

Independent outlet control is the operational core: each of the four receptacles can run on a completely different schedule or logic trigger. Pump A fires on an irrigation schedule. CO₂ solenoid B responds to a CO₂ sensor threshold. Fan C follows a temperature setpoint. Supplemental light D runs a fixed photoperiod timer. All four run in parallel, managed from a single device on a single HUB port — no relay boxes daisy-chained off independent controllers, no separate timer panels.

Sensor-triggered automation is where the quadLINK earns its place in a crop steering setup. When paired with Growlink's canopyLINK or terraLINK sensors, the unit can respond to live VPD, temperature, humidity, CO₂ concentration, or substrate readings — tightening the feedback loop between environmental data and device action without manual intervention. Data logging, alerts, and remote monitoring run through Growlink OS and the Growlink mobile app. Wall mounting hardware is included; an optional DIN rail kit is sold separately for panel-mount installations.

How It Fits a Grow Build

In a Growlink-based facility, the LINKS HUB is the central communication node — it connects and powers up to eight LINK devices over standard RJ-45 cabling, with reliable communication rated up to 1,000 feet from the HUB. The quadLINK slots into any open HUB port and registers in Growlink OS through the Add Hardware Wizard. Once added to a room, its four outlets appear as individually addressable devices in the interface alongside every other sensor and controller in that space.

For new builds or retrofits adding the quadLINK to an existing Growlink deployment, Growlink's installation guidance recommends mounting the unit outside the canopy environment when possible — or inside a sealed enclosure if humidity exposure is unavoidable — with connections oriented downward to reduce moisture ingress risk. The quadLINK is rated for indoor installation. HUB hardware is sold separately. If your operation is not yet on a Growlink HUB, the quadLINK can also register as a standalone Wi-Fi device on a secured 2.4 GHz network, making it a viable entry point into the ecosystem before a full HUB deployment.