Handheld light source/power meter combo delivering simple, accurate measurement of signal attenuation during fiber-optic cable installation. FiberBasix 50 is available as stand-alone ELS-50 (light source) and EPM-50 (power meter) units or as all-in-one test kits. According to EXFO's official FiberBasix 50 spec sheet, the FBK-52 outside plant test kit includes: EPM-53-RB power meter (InGaAs detector), ELS-50-23BL-RB light source (1310/1550 nm laser), carrying case (GP-10-061), extra power meter adapters (PMA-54 SC and PMA-32 ST) and extra light source adapters (LSA-91 SC and LSA-90 ST).