The portable gas detector Microtector III is able to detect up to seven gases simultaneously. The manufacturer-specific design of the device has to be highlighted. Robustness and easy use are in the foreground. Functional elements are illustrated by the housing form. To enlarge the display it was inclined forward. It lights up depending on the alarm status to the traffic signal colors green, yellow and red. The device has been designed under the claim that the personal protective equipment with highest quality and safety should be reduced of weight and size. It is very light and with only three keys it is very easy to use.