No bells and whistle, just connect your CO2 generator and you’re set!
This is Grozone’s beginner solution for growers looking for affordable and easy-to-use CO2 controller.

• User can select one among five preset CO2 control values (1000, 1125, 1250, 1375 and 1500 PPM)
• User can select one among five preset Elevation values for improved CO2 control in higher altitudes (sea level, 1000, 3000, 5280, 7000 feet)
• 3-LED Display shows ambient CO2 value (7 ranges between 500 and 2000 PPM)
• Day/Night detection to turn off CO2 enrichment during the night
• One-button calibration in fresh air (400 PPM)
• 5 Amps Output (for CO2 burner valve or regulator coil)