Find defective FO components, identify and patch wires For single mode (9/125µ) and multi-mode (50/125µ + 62.5/125µ) For male connector: ST, SC, DIN, E2000, FC Range: approx. 3 km LED display Temperature: -10°C to 45°C (operating), -40°C to 70°C (storage) Includes: Dust cap, plastic case, 2 x AAA batteries, instructions