The Evoponic CO2 Detector provides a clear, backlit real-time readout of CO2 concentration in parts per million (PPM), allowing you to accurately monitor and manage CO2 levels in your growing environment. With an effective measurement range of 400–5,000 PPM, it also monitors temperature and humidity, and includes colour-coded alarms to alert you to CO2 concentrations that may be harmful to human health. Charges via the included USB cable. Key Features Real-time CO2 PPM readout with clear backlit display Measurement range: 400–5,000 PPM Also monitors temperature and humidity Colour-coded alarms for high CO2 concentration warnings Simple, intuitive controls Lightweight and easy to position USB charging cable included Why Monitor CO2? CO2 levels above approximately 1,100 PPM have no additional benefit to plant growth — monitoring allows you to maintain the optimal range without over-supplying and accelerating the depletion of your CO2 source. It also helps you identify when CO2 inputs such as the Evoponic Mother Nature CO2 Bucket are beginning to degrade and need replenishing. Positioning Guide For best results, position the CO2 Detector above your CO2 injection point and below your ventilation inlets/outlets, at approximately plant canopy level. Ideal For Grow rooms and sealed growing environments where CO2 enrichment is in use. Compatible with all CO2 sources including CO2 buckets, bags, and bottled gas systems.