YF2A15-100VB5XLEAX is a Sick photoelectric sensor. It is a polarized retro-reflective sensor with a PNP signal output, which can detect objects when light is shone upon them. It has a range of up to 15 meters, a user-selectable switching point of 3 to 100mm, and an adjustable operating temperature range of -25°C to +55°C. The sensor has a housing made of UV-resistant ABS plastic, IP67 protection, and an LED display for easy setup and diagnostics.