Optical Power Meter Handheld Fiber Optic Test Tool Kit Network Scanner Splitter Port Checker Detection Equipment Item Type: Optical Power MeterTest wavelength1310±50nm1490±15nm1550±10nmIsolation 1310nm~>40dB  >40dBIsolation 1490nm>40dB~ >40dBIsolation 1550nm>40dB    >40dB~Measuring range-35~+10dBm-40~+12dBm -40~+25dBmMeasurement Uncertainty: ≤0.5dB Insertion Loss: ≤1.5dB Detector Type: For InGaAs Display Resolution: 0.1dB Optical Fiber Type: SM 9/125μm Threshold Setting: 10 Groups Optical Connector: For APC(interchangeable SC, ST) Complete Machine Index: Display: Color LCD screen Data Storage: 10 Data Interface: Micro USB Power Supply: 3 x 1.5V AA batteries(not include) Battery Life: Standby >20 hours Operating Temperature: -10℃~+50℃ Storage Temperature: -40℃~+70℃ Relative Humidity: 0~90% No condensation