The EX-TEC® PM 400 is a versatile gas warning device developed for monitoring workspaces. It reliably warns of toxic gas concentrations, oxygen deficiency or excess as well as explosive gas concentrations. Set up for methane (CH4) as standard, it can also be switched to hydrogen (H2). The gas types can be easily changed during operation, offering maximum flexibility. This device is ideal for precise measurement and monitoring in various working environments to ensure the safety of employees.