Welcome to the store! 1. 10 Wavelengths: This fiber optic power meter supports 10 wavelengths: 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 nm, and includes SC, FC, ST adapters for versatile use. 2. Automatic Shutdown Function: The VFL optical power meter cable tester features a 10-minute automatic shutdown function for efficiency and accuracy. 3. Relative Power Calculation: With no warm-up time needed, this optical power meter cable tester offers plug-and-play functionality with precise measurements, relative power calculations, and a calibration function. 4. Low Power Consumption: Utilizing a sensitive chip and a robust internal structure, the VFL cable tester boasts low power consumption for extended working hours. 5. Comprehensive Coverage: The fiber optic power meter VFL covers most communication technology maintenance requirements. Item Type: Fiber Optic Power Meter Material: ABS Red Light VFL Detection Distance: 30km Power Supply: Requires 2 x AAA batteries (batteries not included) Probe Range: InGaAs Wavelength Range: 850-1650nm Standard Wavelengths: 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm Display Resolution: Linear Display: 0.1% Logarithmic Display: 0.01dBm Operating Temperature: -10 - +60℃ Storage Temperature: -25 - +70℃ Automatic Shutdown Time: 10 minutes Battery Life: Not less than 40 hours Package Includes: 1 x Optical Power Meter 1 x Lanyard 1 x User Manual Your satisfaction is our top priority. We are committed to providing you with the best service. If you encounter any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately for the best possible solution.