The MIT Environmental Chamber Gen. 1 (Figure ) is designed for high-throughput degradation testing of perovskite films with areas of approximately 1.27 × 2.54 cm 2 . Color change is used as a proxy for degradation which is induced by environmental stress from the heated sample holder (up to 100 ℃), increased air humidity (up to approximately relative 85% air humidity depending on the level of heating), and illumination (up to 0.16 Sun visible light). Calibration data for the chamber is available in the open access documentation repository supplementing this article (see Data and Code Availability statement). The chamber is easily expandable for higher-throughput testing. It can fit 28 thin film samples under each camera-lamp pair and at maximum two pairs of lamps fit into the chamber. The components are chosen primarily so that they are widely and readily available with reasonable cost, and can be adapted apart from the main parts (the lamp, camera, lens, and reference color chart shown in Figure ). Therefore, this version of the chamber serves as a straightforward path for implementing automated aging testing capacity for any laboratory willing to expand towards stability research. The cost range of this version of the chamber is US$2,000-$5,000 depending on the amount of reused materials utilized in the process.