The Autopilot Cumulus S50 Digital CO₂ 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 CO₂ set point and deadband, min/max recall, LED mode and error indicators, optional calibration and a remote 15' low drift CO₂ sensor with photocell. 

The ppm Up mode is designed for use with CO₂ generator systems (LP or NG).

Fuzzy Logic is designed specifically for controlling standard compressed CO₂ tank & regulator systems to improve efficiency and minimize CO₂ waste. When in Fuzzy Logic mode, the built-in microprocessor continuously applies calculations to the injection schedule, improving CO₂ injection rates over time. This highly efficient method of injection helps maintain more consistent CO₂ levels while saving money year round on expensive CO₂ tanks.
 
Controlling CO₂ 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 CO2 sensor

• Accurate dual-beam CO2 sensor
• Adjustable CO2 deadband
• 15' remote combination probe (CO2 & light)
• Instantaneous readings down to 1 ppm
• Records high and low CO2 levels
• Fuzzy Logic mode adjustable (on/off)
• LED mode and error indicators
• ETL-listed
• 14.5 max operating amperage, 120V