Display: 3.5 inch full touch screen Expandable external storage: U disk (temporary storage) Measurement 80km test range LED white light flashlight Only 1550nm wavelength is used, no need to worry about the 1270, 1490, 1577 wavelengths in 10G PON ports, so you can rest assured to conduct optical testing Dynamic range: 20dB Test range: 100m-80km Wavelength: 1550 (±20nm) Optical interface: SC Pulse: 5ns-20us Measuring time: 5s-180s Measurement mode: real-time, average, automatic Attenuation blind zone: 12m Event dead zone: Less than 3 meters Sampling point: 8000 Input light detection: support Maximum allowable power for light test: 1270nm Less than 10dBm 1310nm Less than 10dBm 1490nm Less than 10dBm 1577nm Less than 10dBm OPM: OPM power range: -50-26dBm OPM response wavelength: 700-1700nm OPM calibration wavelength: 850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm OPM power uncertainty: ±0.2dB OLS: Wavelength: 1550nm Frequency & Mode: CW/270Hz/1kHz/2kHz/1kHz+Blink/2kHz+Blink VFL: Wavelength: 650nm Mode: On,Glint, Off Colour:As Shown Material:ABS Package Contents: 1 * Fiber Live Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.