During our simulation at the MDRS, we will be testing our danger zone detection system. The goal is to be able to warn the members of the team on EVA when they approach on zone considered dangerous. This experiment will be conducted with the other experiment of the Crew 166 (named 3D Map and Simulation). We will accomplish the detection of the dangerous zones using zigbee communication with small zigbee emitters and a arduino card equipped with a zigbee to allow us to measure the distance to other modules. The zigbee modules have a RSSI entry (Received Signal Strength Indication), allowing us to know the distance to the emitter which will be at the entry of the danger zone. If the data’s are positive, the set-up can be used to allow the location of the members on EVA, by setting up a certain number of zigbee emitters in an area around the base. Then, by using a fingerprinting location method, a trilateration method or a triangulation method, we will be able to locate the members on EVA. The fingerprinting method will take more time to implement and is environnement dependant (if the emitters are moved, the method as to be applied again), but will give better results.