The OPT4060 has an automatic full-scale range setting feature that eliminates the need to predict and set the best range for the device. Each channel has a auto-scaling algorithm and independently tracks light levels. In this mode, the OPT4060 automatically selects the best full-scale range for the given lighting condition. The OPT4060 has a high degree of result matching between the full-scale range settings. This matching eliminates the problem of varying results or the need for range-specific, user-calibrated gain factors when different full-scale ranges are chosen. The device has independent range detection logic making the device operate seamlessly with a wide range of light color and levels.