For personal air monitoring. Ddetection of carbon monoxide, oxygen, hydrogen sulphide or sulphur dioxide. Time-limited up to two years Strong performance for maximum safety You can rely on the Drager Pac 6000: The personal single gas detection device warns against hazardous concentrations of carbon monoxide, hydrogen sulphide, sulphur dioxide or oxygen with precision and reliability.Powerful sensors with a very low t-90 response time ensure quick reactions. The Pac 6000 is versatile thanks to its wide measurement range. For example, the CO sensor measures concentrations from 1 to 1,999 ppm, and the H2S sensor from 0.4 to 100 ppm