The single gas detectors of the Dräger Pac series are compatible with the accessories of its predecessors, while the housing has been carefully modified in order to improve visual conciseness and to emphasise robustness. Striking colour coding helps users to intuitively understand the installed gas sensor, thus preventing dangerous mix-ups. In addition, the series is based on a particularly resource-saving design approach, since the gas sensor protection grids can be exchanged without having to open the entire housing.