Product use: The photovoltaic module testing box is mainly used in the photovoltaic industry to test the parameters and performance of a series of photovoltaic modules, such as ground crystalline silicon photovoltaic modules, ground thin-film photovoltaic modules, etc., under high temperature, low temperature, alternating humidity or constant temperature environment changes; The parameters and performance of the constant humidity and heat test after temperature environment changes. It is specially customized according to IEC standards and suitable for schools, factories, military industries, scientific research and other units.