FCT-FCLB works with FCT-FC Measuring unit to measure optical loss, power, and electrical signals. Canare cable checker allows fast, easy confirmation of hybrid fiber optic cables in the field. No heavy equipment to drag around. The compact design features a backlight digital display to measure optic loss/power and electrical continuity. Small and light, Canare cable checker helps make mobile installations smooth, secure and constant. This measuring unit works with the Canare loop-back unit, FCT-FCLB.