C02 controller proleaf b2 BECC-Open room fan, heater, cooler + vent

The Proleaf B2 BECC CO2 Controller measures carbon dioxide levels in parts per million for open room environments. It connects to fans, heaters, coolers, and vents to automatically adjust CO2 concentrations based on user-set thresholds. Features include a precise NDIR CO2 sensor, digital display for real-time monitoring, programmable day/night setpoints, and multiple relay outputs for device control. Safety alarms activate for high or low CO2 levels. The controller supports integration with environmental systems, enabling consistent regulation without sealed enclosures. Installation involves connecting power, sensor, and peripherals for reliable operation.