Pro-Leaf Multi-Function Environmental Controller – BECC-B2

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SKU: PL-BECC-B2 Categories: ,


Pro-Leaf Multi-function Environmental Controller BECC-B2

The Pro-Leaf BECC-B2 Multi-Function Environmental Controller offers full control of a grow room, with four 240-volt receptacles for cooling, heating, humidity and CO2 devices.

This advanced unit precisely monitors and manages CO2 in a range of 400-2000PPM with an adjustable deadband. These controllers feature fuzzy-logic technology to provide even greater control in compressed CO2 setups. The BECC-B2 regulates temperature in a control range of 5-50 degrees centigrade, and relative humidity in a range of 5-95%, both with adjustable deadbands.

The BECC-B2 includes a remote sensor on a 4.5m cable with integrated photocell. Photocell control allows for separate day and night settings of temperature and humidity.

Precise Temperature, Humidity & CO2 Level Control

  • Controls up to four devices Cooling-Heating-Humidity-CO2
  • Real Time Digital displays
  • Separate Day & Night Temperature set points
  • Fuzzy Logic PPM up & PPM down control modes
  • High & Low Temp protection
  • Cooling and Heating mode functions
  • Accurate Amphenol CO2 Sensor with Calibration function
  • Humidify & Dehumidify modes


  • Sensor Cord Length: 4.5m (15″)
  • Control Range: 400PPM to 2000PPM
  • CO2 Accuracy: 100PPM

Why Add CO2?

  • After ensuring that environmental conditions such as moisture and temperature levels are optimal, things can be pushed to the next level by increasing the CO2 content of the air.
  • Plants use CO2 for photosynthesis (sugar production). If CO2 is restricted, so is sugar production.
  • Plants can handle 1000 – 1200PPM of CO2. There’s only around 400 – 450PPM in the air. That’s less than 1/2 the amount they can use!
  • Adding CO2 is one of the easiest ways to ramp up sugar production and increases yields by up to 20%
  • In summer, extra CO2 and also helps plants with heat stress by photosynthesising more