Feature:1. 15km test fault distance, which satisfies most working conditions.2. With wide wavelength, more standard wavelengths can be measured.3. Set the automatic shutdown time, which can be used for a longer time in actual use.4. Made of high-quality materials, it has good quality and long service life.5. This product is small in size and light in weight, making it easy to carry around.Specification:Condition:100% Brand New Item Type: Fiber Optical Power MeterMaterial: Engineering PlasticTest Distance: 15kmBattery: 3 x AA batteries( not included)Wavelength Range: 800-1700 (nm)Connector: FC/SC/STProbe Type: InGaAsPower Measurement Range: -70-+6Standard Wavelength: 850/1300/1310/1490/1550/1625nmRed Light Working Wavelength: 650nmWorking Temperature: -10-60Automatic Shutdown Time: 10minBattery Working Time: 48h.Package List:1 xFiber Optical Power Meter1 x Connector1 x Plastic Tube