The RIKO PRD-310-B1 is a reflective-type fiber-optic sensor element (often paired with a separate amplifier) designed for industrial automation applications. It uses a flexible optical fibre to detect the presence, position or edge of objects where space is limited or conventional sensors cannot be used. The unit features a durable fibre construction that can be bent or routed through confined spaces, making it suitable for high-flex or modular machine environments