The model FID-20R / 21R have a upgrade version: FID-25R/26R. Fujikura optical fiber identifier FID-20R, digital LCD display, suitable for 250/900um, 1.1~2mm, 3mm bunch and ribbon fiber. With power meter function. Fujikura Optical Fiber Identifier FID-20R Features: Identification of traffic signal, CW light, modulated tone Applicable for 0.25 and 0.9mm coated fiber, up to 3mm.. read more →