This Honeywell carbon monoxide (CO) cartridge is designed for gas detection and monitoring applications, capable of measuring CO concentrations ranging from 1 to 500 parts per million (ppm). It is typically used in conjunction with compatible gas detection equipment to provide accurate readings of CO levels, which is critical for ensuring safety in environments where carbon monoxide exposure could occur. The cartridge's measurement range allows it to detect both low-level and potentially harmful concentrations of CO gas.