It's like a Me Light and Grayscale Sensor without the white LED. Almost the same function and usage, but a little cheaper. You can use it to make a intelligent dimming lamp, a laser communication system, or something cooler. The library is same as Me Light and Grayscale Sensor. Features: * Wide measuring range and high resolution * 16mm interval M4 mounting holes, compatible with Makeblock beams * 2.54mm pin holes for connecting with Dupont wire * Easy wiring with 6P6C RJ25 interface * Arduino library for easy programming Specification: * Rated Voltage: 5V * Size: 24 x 48 x 16 mm (length x width x height)