Feature:1. Protective Silicone Sleeve: The surface of this fibre optic power meter has a drop proof and removable silicon protective silicone sleeve, with a split design for better protection.2. Backlit LED Display: This fibre optic power meter with backlit LED LCD display allows the unit to work in bright light or in dark conditions. The backlight can be switched on and off manually, which is very convenient and thus increases the efficiency.3. Stand Design: The fibre optic power meter has a sturdy stand design, which makes the support more stable. Thus meeting your different usage habits and making the machine more convenient and colourful to use.4. Easy to Carry: This optical power meter is compact and lightweight, and its handheld design makes it easy to carry wherever you go.5. High Accuracy: The optical fiber power meter is designed to provide high accuracy readings, ensuring that your network is running efficiently and without any issues, which offers accurate and reliable measurements of the power and loss of your optical fibers, ensuring that you can diagnose and fix any problems quickly.Specification:Item Type: Optical Fiber Power MeterMaterial: ABSModel: KPN 35Measurement Wavelength: 1310nm1490nm1550nmTransmitter Type: InGaASLinearity: ±0.2dB at 1550nm>-40dBm, 1490nm band>40dB, 1310nm band>40aB1310nm band40dBHeight Separation Band Filtering Function: 1550m band>40dB, 1550nm band>30dB, 1490nm band>30dBMeasurement Range: -40dBm to +16dBm, -50dBm to +16dBm, -50dBm to +23dBmInsertion Loss (dB) in Penetration Mode: Less than 1.5bBMeasurable Optical Frequency Broadband: 1260-1360, 1480-1500, 1539-1565Inherent Uncertainty: 0.5dB±1nW at 1550nmDisplay Resolution: 0.01dBValve Setting: 10 groups set by the host computerCalibration Wavelength: 1310mm 1490nm 1550nmData Storage: 900 groupsOperating Temperature: -10℃ to +50℃Relative Humidity: 0%-95%RHInterface Type: SC UPCBattery: 3 x AA (not included).Package List:1 xOptical Fiber Power Meter