Growlink Connect Controller Runs Climate, Irrigation, and Light on One Brain
The Connect Controller pairs 16 solid state relays with 4 SPDT mechanical relays on one board. Eight 0-10V analog outputs handle dimmable lighting and proportional control. SDI-12 input handles up to 36 substrate and climate sensors. BACnet MS/TP and BACnet IP fold the unit into existing building systems. A 24VDC supply (8A max) runs the whole stack, with onboard 24VAC, 24VDC, and 10VDC rails feeding the device buses.
All-In-One Room Controller for Crop Steering and Multi-Room Operations
Configuration supports unlimited rooms and zones, so a single controller can drive a multi-room facility or scale across a campus. Intelligent lighting handles DLI targets and throttling. Crop steering, blueprint recipes, and harvest analytics live in the Growlink platform once the unit is online. OTA firmware keeps the controller current without a service call. The Connect ships with or without the commercial poly enclosure. The enclosure adds the M12 ESM-2 sensor port and a pre-wired 24VAC transformer for wet-contact device control.
Key Features
- 16 SSR + 4 SPDT Mechanical Relays: Full relay rack on one controller, 3A max per channel, with mechanical relays configurable as wet or dry contact.
- 8 Analog 0-10V Outputs: Dimmable lighting and proportional device control at 200 mA per channel for fans, valves, and chillers.
- SDI-12 Bus for 36 Sensors: Substrate, climate, and other SDI-12 probes wire into one input bus alongside the relay rack.
- BACnet MS/TP and BACnet IP: Speaks BMS protocols so the controller drops into existing building systems for HVAC and lighting.
- Crop Steering and Recipe Blueprints: Growlink platform runs irrigation strategies, DLI throttling, harvest analytics, and remote alarms.
Technical Specifications
| Specification | Value |
|---|---|
| Power Input | 24VDC, 8A max (110-240VAC via 8A external supply) |
| Max Operating Temperature | 131°F (55°C) |
| Onboard Voltage Rails | 24VAC (2.5A), 24VDC (5A), 10VDC |
| Solid State Relays | 16 (3A / 38VAC / 48VDC max) |
| Mechanical Relays | 4 × SPDT (wet or dry contact, 100,000-cycle life) |
| Analog Outputs | 8 × 0-10VDC, 200 mA per channel |
| SDI-12 Capacity | Up to 36 sensors |
| Network | 1 × Ethernet (RJ45) |
| Building Protocols | BACnet MS/TP, BACnet IP |
| Expansion | Metz IO modules |
| Compatible Sensors | ESM-2, ESM-3, TerraLINK, PAR, weather station, pH analog, EC analog, flow, float, tank level, 3rd-party BACnet |
| Dimensions | 42.16 × 37.08 × 20.96 cm |
| Variants | Controller only / Commercial poly enclosure (M12 ESM-2 port + 24VAC transformer) |