The GRAYHILL part 61C11-01-08-02 is an optical encoder designed for rotary incremental movement. It features a flat design and weighs 1.5 oz/in, making it suitable for a variety of applications. The encoder provides accurate position sensing through its straight digital square wave output. It is mounted on a PCB with through-hole PC pins for secure connectivity. With 8 CPR (counts per revolution), this encoder offers precise and reliable rotational feedback.