Agrowtek - Grow Control GC-Pro Climate & Hydro Controller (703100)

Model: 703100

GC-Pro is Agrowtek’s flagship, standard climate and hydroponics dosing controller. Designed to manage up to three climate environments, two of which with hydroponics dosing controls.

The GC-Pro controls up to three climate zones and two nutrient reservoirs. Complete control of temperature, humidity, lighting, CO2 (sensor optional), timers, dosing, irrigation and more! Includes two sensor ports, four discrete inputs, twelve outputs for relays and one basic climate sensor. Serial & Ethernet ports for free remote monitoring software. Up to three (3) climate zones, two (2) zones each with hydroponics dosing for up to eight (8) parts plus two (2) pH.


  • Low-voltage 24VDC operation
  • (12) 24VDC Programmable Outputs (expandable up to 20)
  • (4) 24VDC Programmable Switch/Digital Sensor Inputs
  • (8) Programmable Analog Sensor Channels (expandable up to 16)
  • Dual/Triple Zone Control
  • Powder-coated sheet metal enclosure (Wisconsin)
  • Industrial components for long life/reliability (USA)
  • Designed & manufactured in the U.S.A.!
  • Full 3-Year Factory Direct Warranty


Controller includes one basic climate sensor. Additional sensors, equipment relays or accessories purchased separately.

  • (703116) Aspirated Precision Electronic Climate Sensor for Air Temperature, Relative Humidity and Light Irradiance
  • GrowControl Software and User Manuals on CD
  • 60W 24VDC UL Class II Power Supply 110-240VAC
  • Aspirated climate sensor for air temperature, relative humidity and light irradiance (W/m2)
  • Serial Port for PC software (RS-232)
  • (2) Sensor Ports (8 analog channels)
  • (4) discrete inputs
  • (12) 24vdc outputs for relays
  • (1) expansion port

Control Functions:

  • Lighting Timers (each with secondary delay timer)
  • Light-Flip Control for Flip Box Operation
  • Day/Night Zones/Outputs
  • Cooling/Heating/Limit Thermostats
  • Humdify/Dehumidify Humdistats
  • 24-Hour Timers
  • Standard Cycle-Timers
  • 24-Hour Scheduled Cycle Timers
  • Off-Delay Timers
  • Re-start Delay Timers
  • 24-Hour Cancel Timers
  • Hour Meters
  • CO2 Injection & Ventilation Controls w/Boost Timer
  • Nutrient Dosing with (8) proportional stages each, batch dosing, and 16 set-point scheduling
  • pH Dosing with (1) up and (1) down stage each

Controller Options/Add-ons:

  • (703112) AgrowTouch Color Touch Screen For GC-Pro
  • (Included) AgrowNet Ethernet Port
  • "XD" +8 output expansion module, or
  • "XA" +2 sensor port expansion module
  • RX1 Single Relay Outlet 15A/120V
  • (703132) RX6 Six Relay Outlet 15A/120V
  • (703138) RD6 Six Dry-Contact Relays 24VDC/120VAC/5A
  • (703142) RD12 Twelve Dry-Contact Relays 24VDC/120VAC/5A
  • (703144) AgrowDose Dosing Pump 46 ml/min
  • (703146) AgrowDose Quad Dosing Pump 46 ml/min

Sensor Options/Add-ons:

  • (703118) CO2 ppm sensor (installed in climate sensor)
  • (703120) Hydro Sensor Kit (pH, Conductivity, Water Temperature)
  • (703116) Aspirated Indoor Climate Sensor SNS-C
  • Outdoor weather sensors (wind, rain, temperature, etc.)
Weight: 8 lb.
Dimensions: 10in. × 12in. × 6in.
List Price: $2,028.00