CO2 Controller Carbon Dioxide Controller CO2 Meter Monitor with Relay Function 4.5m Cable NDIR Carbon Dioxide Sensor Probe for Grow Room, Plant, Grow Tent, Greenhouse, Garden, Indoor

Accurate NDIR CO2 sensor: Uses nondispersive infrared sensor (NDIR) technology for most precise and reliable CO2 measurements.;
Real-time CO2 monitoring: The meter displays real-time CO2 values and features an adjustable CO2 chart with customizable time scales.; Audible alarm and target zone indicator: An audible alarm warns of high CO2 concentrations, and the target zone indicator helps you maintain optimal CO2 levels.;
Convenient features: With built-in day/night auto-detection, the sensing probe cable is 4.5 meters long to extend your measure spot 4.5 meters away from the display.;
Extended measurement range: The meter has a measuring range of 0-5000 ppm with high accuracy. This CO2 controller has plants mode and human mode. It can help you to measure the exact value of CO2.