XENSIV™ PAS CO2 5V gas sensor The XENSIV™ PASCO2V15 gas sensor is a 5V, real carbon dioxide (CO2) sensor based on photoacoustic spectroscopy (PAS) technology. The sensor comes in an unprecedentedly small form factor and provides accurate CO2 data outputs in direct ppm readings. Its direct ppm readings, Tape and Reel packing, SMD capability, and simple design allow for quicker and easier integration into customers' systems in both low- and high-volume applications. The compact design facilitates seamless integration and smooth high-volume assembly, while its robust performance enables the sensor to fulfill the requirements of the WELL™ building standard and other demanding applications.