Abstract: Quality control of an electrochromic device is described. A method may be subsequent to a stage of manufacturing of an electrochromic device. The method may include directing a current tinting state of the electrochromic device to correspond to a first tinting state and receiving sensor data associated with the directing of the current tinting state of the electrochromic device to correspond to the first tinting state. The method may further include determining, based on the sensor data, whether a corrective action is to be performed for the electrochromic device and, responsive to determining the corrective action is to be performed, cause the corrective action to be performed.