The Aim of this project was to make a climatic chamber to measure the water transmission of polymer foils within the temperature range of 30°C - 60°C and 30% - 100% Humidity range. The chamber will include a temperature and humidity sensor, a temperature control system, humidity control system, an Arduino using the PI controller system, a fan with a motor which is also controlled and its purpose is to create a homogenous environment within the chamber.