Oxygen, hydrogen or toxic gases like ammonia, chlorine, carbon monoxide, hydrogen sulphide, ozone and many other gases can be detected reliably from the flexible single gas detector Micro III. The current gas concentration will be shown on a huge display. With a 95 dB load alarm and a changing frequency the small single gas detector with Atex certification is audible even in a loud environment. Simultaneously, two bright alternating flashing LEDs indicate a gas alarm. Three alarm levels and the battery alarm are clearly distinguishable. A high-performance pump (in accordance with Atex) can be attached for the sampling of gas.