In this Final Grade Project the principal objective is the implementation of one or more devices to measure the temperature and the pressure inside a test stand. In this stand different types of measurement have already been performed but additional information about temperature and pressure will raise the detection limit as well as decrease the number of devices involved. At the moment independent and specific devices are used to measure pressure, temperature, power of the laser or wavelength. As a long-term goal the objective is to use highly integrated sensors which can be read-out by a microcontroller, which is already used for the read-out of the microphone, and include them into the system. Selection and preparation of these sensors are the goal of this project. Decide, choose and implement the sensor of temperature and pressure inside the test stand to reduce the number of devices.