GrowControl™ GCX Cultivation Control System
Climate, irrigation and hydroponics control for your whole facility: up to 100 GrowNET™ devices on the GCX and 200 on the GCX+, with free remote access, email alerts and updates.
One Controller for Your Whole Facility
Climate, irrigation and hydroponics on one screen: HVAC temperature and humidity, light dimming and spectrum, crop steering, CO₂ and nutrient dosing.
Email and text alerts tell you about problems right away, and free remote access from your phone or PC keeps you in control. Start simple and add devices as the facility grows.

Three Sizes, One Network
Every GrowNET™ device works with every controller. Pick the size for today; move up when the facility grows.
| GCXmini | GCXThis page | GCX+This page | |
|---|---|---|---|
![]() | ![]() | ![]() | |
| Best For | 1-2 Rooms | Typical Facility | Large Facility |
| GrowNET™ Devices | 16 | 100 | 200 |
| Screen | 7 in | 10.1 in | 15.6 in |
| Price | $1,599 | $2,799 | $4,299 |
| View GCXmini › | Choose GCX above | Choose GCX+ above |
Sense, control and respond on one cable.
Sensors, relays, valves and pumps connect with standard Ethernet cable through HX8 hubs placed in each room.

Each GrowNET™ device uses one address on the controller's network: 100 on the GCX, 200 on the GCX+.

Environment Sensors
Temperature, humidity, ambient light and optional CO₂ in one sensor. Add one or more per room to control cooling, heating, humidity and CO₂.
View Environment sensors ›
Relays & I/O
Dry contacts for HVAC, DC outputs, discrete and analog inputs, 0-10 V lighting control and reversible motor controls.
View Relays & I/O ›
Irrigation Control
Multi-zone irrigation with moisture-sensor crop steering or timed irrigation events.
View Moisture sensors ›
Hydroponics Sensors
Temperature, pH, EC, ORP and dissolved oxygen for stock tanks and recirculating systems.
View Hydroponics sensors ›
Dosing Pumps
AgrowDOSE™ peristaltic pumps for nutrients and pH buffers: up to 10 ft lift, no manual priming, resist clogging.
View Dosing pumps ›
GrowNET™ Hubs
HX8 hubs turn one port into eight and power most devices over the cable. Hubs do not count as devices; cable runs up to 1000 ft.
View HX8 hub ›Remote access, alerts and data, with no fees.
Everything the GCX needs to keep you informed is built in.
Remote Access
See and control the GCX from any standard VNC app on a phone or computer. Ethernet built in, WiFi optional.
Remote viewing apps ›Email Alerts
Alerts to several people through most SMTP email servers, including Gmail. No subscription fees.
One-Button Updates
Check for firmware updates from the screen; new versions download and install automatically.
Data Logging
2+ GB of internal memory, standard .CSV files, four USB ports for export and accessories.
Build the logic for every room.
Drag control functions onto a workspace modeled after a room or zone. Use them on their own or link them for complex control.
- Clock timers
- On/off delay timers
- Cycle timers
- Thermostats
- Humidistats
- Integrated HVAC control with VPD
- Light dimming & spectrum
- CO₂ injection, exhaust & alarms
- Motor position (vents, shades, curtains)
- Irrigation stage timers
- Crop steering with moisture sensors
- Tank level (fill) control
- Nutrient & pH dosing
- Analog output modulation
- Sensor averaging
- Custom alarms & messages
- Math
- Logic functions
- More…
Built in Brookfield, Wisconsin
We build the GCX series almost entirely in-house, which lets us design for the highest quality at the lowest cost.
- Enclosure, motherboard, I/O boards and peripherals made in-house.
- Every circuit board 100% inspected, tested and conformal coated against moisture and dust.
- Dedicated Linux OS on an industrial flash drive.
- Passively cooled quad-core processor: smooth and silent.



Manuals and Data Sheets
Need Help Choosing Components?
Tell us about your rooms and equipment and we will put the GCX system together with you.


