Features 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 Meter Material: Engineering Plastic Test Distance: 15km Battery: 3 x AA batteries( not included) Wavelength Range: 800-1700 (nm) Connector: FC/SC/ST Probe Type: InGaAs Power Measurement Range: -70-+6 Standard Wavelength: 850/1300/1310/1490/1550/1625nm Red Light Working Wavelength: 650nm Working Temperature: -10-60℃ Automatic Shutdown Time: 10min Battery Working Time: 48h Package List 1 x Fiber Optical Power Meter 1 x Connector 1 x Plastic Tube