Optical Fiber Identifier 10Mw VFL Power Meter Fiber Optic Cable Detector with LED and Red Light Item Type: Optical Fiber Identifier Model: KFI 35P Identification Wavelength Range: 800nm-1700nm Signal Direction Detection Range: -46-10dBm (1310nm); -50-10dBm (1550nm) Probe Type: For InGaAs Adapter Type: 0.25mm (bare fiber), 0.9mm, 2.0mm, 3.0mm (tail fiber) Signal Power Detection Range: -50-10dBm Modulation Frequency: CW 270Hz, 1kHz, 2kHz Signal Frequency Indication: 270Hz, 1kHz, 2kHz Frequency Detection Range (Average): 0.9mm Tail Fiber: -30-0(270Hz) 2.0mm 3.0mm Tail Fiber: -25-0dBm (270Hz, 1kHz, 2kHz) 0.25mm Bare Fiber: -20-0dBm (2KHz) Insertion Loss (Typical Value): 0.8dB (1310nm); 2.5dB(1550nm) Battery: 1 x 9V alkaline battery (not included) Storage Temperature: -10-70℃ Working Temperature: 0-50℃ Signal Direction Indication: LED indicator left and right direction