Autopilot CUMULUS S50 Digital CO2 Controller

Autopilot CUMULUS S50 Digital CO2 Controller

SKU #: APE3100

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Autopilot Brand Product

Availability: In stock

Lead time: This product ships in 2 Business Days


Autopilot Product Documents

APE3100 Instructions

The Autopilot Cumulus S50 Digital CO 2 Controller measures and controls grow room carbon dioxide levels with great precision. It can operate in Fuzzy Logic mode, ppm Up or ppm Down mode. The S50 digital display shows exact ppm readings down to 1 ppm resolution. It boasts a fully customizable CO 2 set point and deadband, min/max recall, LED mode and error indicators, optional calibration and a remote 15' low drift CO 2 sensor with photocell.

The ppm Up mode is designed for use with CO 2 generator systems (LP or NG).

Fuzzy Logic is designed specifically for controlling standard compressed CO 2 tank and regulator systems to improve efficiency and minimize CO 2 waste. When in Fuzzy Logic mode, the built-in microprocessor continuously applies calculations to the injection schedule, improving CO 2 injection rates over time. This highly efficient method of injection helps maintain more consistent CO 2 levels while saving money year round on expensive CO 2 tanks.

Controlling CO 2 has never been easier or more affordable. Autopilot's CUMULUS S50 eliminates guesswork while maintaining grow room carbon dioxide levels with great accuracy and efficiency.

Mounts to both walls and grow tents. Two mounting kits are included with each controller.


  • Accurate dual-beam CO 2 sensor
  • Adjustable CO 2 deadband
  • 15' remote combination probe (CO 2 and light)
  • Instantaneous readings down to 1 ppm
  • Records high and low CO 2 levels
  • Fuzzy Logic mode adjustable (on/off)
  • LED mode and error indicators
  • ETL-listed
  • 14.5 max operating amperage, 120V

NOTE: Can be linked to the APE4100 and other controllers to disable the CO 2 output when exhaust fans are in operation (optional 24V adapter included)

Tech Specs


Weight (lb.)3.2
Lead TimeThis product ships in 2 Business Days
Length (in.)11.4
Width (in.)7.1
Height (in.)6
Warranty2 Year
Prop 65No
UL ListedNo
CO2 EnrichmentCO2 Controllers
CO2 Sensor TypeRemote CO2 Sensor
Number of ZonesSingle Zone
Has PhotocellYes
Power Cord(s) IncludedYes
Voltage120/240 Volts