The WTE280-2P1131 is a proximity sensor made by Sick. It is a single-turn incremental encoder designed for use in harsh environments. The device has a robust housing made out of aluminum, as well as a 0.5mm axial resolution for sensing angular position. It also has an electrical life of up to 10 million revolutions and IP67 housing for protection against dust and water. The connecting cable has a length of 5m.