➀ Infineon's PASCO2V15 CO2 sensor uses photoacoustic spectroscopy with a built-in microphone and IR emitter to detect CO2 levels. ➁ The sensor offers high precision (±50 ppm ±5%) and a wide measurement range (0 to 32,000 ppm). ➂ It features pressure compensation, automatic baseline offset correction, and low power consumption, making it suitable for HVAC systems and smart thermostats.