FR-610-I Sensors Probe Diffuse Reflective Digital Fiber Optic M6 Probe Sensor Cable Line Temperature Probe High Temperature Thermocouple: Simple installation, easier circuit connection. Insulation, non-inductive electrical properties, waterproof, high temperature and corrosion. Reliable and durable, ideal for detection and measurement tasks. The fiber optic sensor is a type of sensor that converts the state of the measured object into a measurable optical signal. It has strong anti-interference ability, fine diameter, soft quality, and light weight. For other items, please see <a. New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is.