The combination sensor has three sensors: temperature, humidity and CO2. The ventilation device is controlled according to the measured humidity and CO2 values.Article: WS 75 CO2, Installation location: KWL device, Material: plastic, Color: green, Weight: 0.0119 kg, Weight with packaging: 0.025 kg, Width: 63 mm, Height: 25 mm, Depth: 16 mm, Width with packaging: 90 mm, Height with packaging: 85 mm, Depth with packaging: 45 mm