Optical Fiber Power Meter Handheld High Accuracy Mulit Function Fiber Optic Light Cable Tester with LED Display Item Type: Optical Fiber Power Meter Material: ABS Model: KPN 35 Measurement Wavelength: 1310nm1490nm1550nm Transmitter Type: InGaAS Linearity: ±0.2dB at 1550nm>-40dBm, 1490nm band>40dB, 1310nm band>40aB1310nm band40dB Height Separation Band Filtering Function: 1550m band>40dB, 1550nm band>30dB, 1490nm band>30dB Measurement Range: -40dBm to +16dBm, -50dBm to +16dBm, -50dBm to +23dBm Insertion Loss (dB) in Penetration Mode: Less than 1.5bB Measurable Optical Frequency Broadband: 1260-1360, 1480-1500, 1539-1565 Inherent Uncertainty: 0.5dB±1nW at 1550nm Display Resolution: 0.01dB Valve Setting: 10 groups set by the host computer Calibration Wavelength: 1310mm 1490nm 1550nm Data Storage: 900 groups Operating Temperature: -10℃ to +50℃ Relative Humidity: 0%-95%RH Interface Type: SC UPC Battery: 3 x AA (not included)