The LTR-553ALS-01 is a light to digital converter ambient light photo sensor manufactured by Lite-On. It is an opto-electronic device that is used to detect light intensity in various applications such as lighting, display panels or touchscreens, robots, among others. It is a miniature package measuring 2.5 mm × 2.0 mm and features a phototransistor, reverse protection and an SMBus digital output. The photo transistor has an output voltage in direct proportion to illumination level, and the device can detect light levels from 0.01 lux up to 50k lux. The digital output interface provides users with a high level of accuracy, and the device has been optimized for low power consumption. The LTR-553ALS-01 is the ideal device for embedded system designs, and is suitable for both indoor and outdoor applications.