Feature Compact walk-in chambers provide a test chamber large enough for testing full-size PV modules and other large products in the least amount of floorspace. Can be use for panels 1.2m x 2m or larger. JOEO Compact walk-in humidity environmental chamber provide a variety of performance capabilities to meet maximum or minimum change rates in IEC or UL test standards. Incorporated are the features of our smaller Platinum and Global-N lines. The refrigeration systems of these models utilize modern, high performance scroll compressors that allow a small footprint while allowing unparalleled service access. The models come in different performance versions, depending on your application. More powerful performance allows you to complete the temperature-cycling test faster, or with a maximum number of modules. There also is a 'damp-heat' only model that saves you capital-cost and energy.