Audio & Video Cables & Adapters
Guakiili Fiber Kit FTTH Tool Kit, 70 dBm~ + 10 dBm Optical Power Meter and 10 mW Visual Fault Locator, Fiber Cleaver Included (Mixed Colour)
Optical power meter - can measure 7 standard wavelengths 850/980/1300/1310/1490/1550/1625 nm, test range: -70 dBm ~ +6 dBm, support for lighting, support of automatic shutdown, support of the selection of backlight, support of wavelength memory...
https://www.bizrate.co.uk/audio_videocables_adapters/guakiili-fiber-kit-ftth-tool-oid40155173355.html