Cannabis Equipment Marketplace

CO2 Grow Controller


The RAD-0502 CO2 Controller and Sensors for Grow Rooms provides a simple and affordable way to adjust and review your CO2 levels when you want to and how you want to for your indoor grow space. With the RAD-0502 you can ensure that your plants never exhaust their supply of CO2 and grow at their maximum potential under optimized conditions.

The CO2 Controller for Grow Rooms can also be used in greenhouses, grow rooms, hydroponics, mushroom farms, or anywhere elevated CO2 levels are used to maximize plant growth.

If you are serious about growing, this is an ideal solution to control both high and low target CO2 levels and maximize plant yields, increasing profitability – in no time.


  • Accurate CO2 control for small to large-sized indoor grow facilities
  • Control 2 zones with 2 sensors
  • Customizable CO2 setpoints for high and low target levels
  • Dual Beam NDIR technology accurately measures CO2 concentrations 0-3,000ppm
  • Built-in temperature, humidity, and light
  • (2) Relay outputs that can automatically control a CO2 generator or compressed CO2 tanks
  • Versatile modes for greenhouse or HVAC
  • 2 Relays that are user-configurable
  • The built-in photo sensor turns off the relay in darkness to save CO2 (in greenhouse mode only)
  • Customized historical graph data display
  • Easy fresh air calibration.
  • Measurement Range: 0-3,000ppm
  • CO2 Sensing Method: Non-dispersive Infrared (NDIR)
  • Target Gas Ranges: 0-2,000ppm and 0-5,000ppm
  • Measurements: Requires 1 liter per minute of constant flow per channel
  • Resolution: 1ppm @ 0-1,000ppm ; 10ppm above 1000pm
  • Dimensions: 4.96 x 6.70 x 2.65 inches
  • Accuracy: ± 70ppm or ± 5% CO2
  • Sensor Response Time: < 2 minutes
  • Operating Temperature: -20°C – 60°C
  • Sensor Cables: (2x) CAT5e Cables – 25′ ft. long
  • Relays: 2 relays, either (Normally Open) NO or (Normally Closed) NC
  • Sensor Life Expectancy: > 10 years


  • Power: Adapter 110/220 VAC
  • Power Consumption: 1 W max @ 115 VAC 60 Hz | 2 W max @ 230 VAC 50 Hz
  • Piggyback Cable: <5A @ 250 VAC, SPST


  • 1 year – See CO2Meter Terms and Conditions.


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Shipping Policy

You can select Federal Express (FedEx), United Parcel Service (UPS), or United States Postal Service (USPS) shipping at checkout. We endeavor to ship all UPS and FEDEX orders received before 2pm EST the same day Monday through Friday based on supply. USPS orders are shipped the next day after you place the order Monday through Friday. Depending on your distance from Florida, Ground UPS, FEDEX and USPS delivers within 3-10 business days.

Refund Policy

If, after receiving the product you determine that it does not meet your needs, a RMA (Return Material Authorization) number must be obtained from within 30 days of delivery. To be considered for a refund, the original box with all parts, manuals, and packaging must be included. The item must be received at in working condition void from any damage, misuse or tampering.

To obtain a RMA (Return Material Authorization) for a full refund less shipping costs call at (877) 678-4259 Toll Free.

Cancellation / Return / Exchange Policy

Our devices come with either a one (1) year or ninety (90) day limited manufacturer's warranty, specified on the product page, starting from the date the meter was shipped to the buyer. See the individual product page for details.