... pigtailed bridle wire.Major FeaturesPortable structure. Easy operation.Adapters available for bare fibers and tail fibers.Major FunctionsIdentify multiple signal frequencies ... Range-38∼+20dBm1310nm,-40∼+20dBm1550nmRange of wavelength for identification1300,1310,1480,1550,1625,1650nmType of signal for identificationCW, 270Hz±10%, 1kHz±10%, 2kHz ...