Temperature and humidity chambers artificially replicate both the temperature and humidity of the environment a product may be exposed to so that the response can be monitored. A temperature and humidity chamber is able to manipulate sudden and extreme temperature variations (known as thermal shock), altitude, moisture or relative humidity, electrodynamic vibrations, and weathering. Much like a temperature chamber, a temperature and humidity chamber is used to evaluate the environmental limits for almost every product in the alternative energy, telecommunications, defense, aerospace, pharmaceutical, automotive, and electronics industries. They range in size from benchtop to large scale, to serve individual needs, and many are computer programmable for streamlined testing and analysis.