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 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). Package List: 1 x Optical Fiber Power Meter