Feature:1. CLEAR COLOR LCD DISPLAY: Detail means professionalism, and a unique result or information display of optical power meter ensures a satisfying user experience2. DUSTPROOF AND PRACTICAL: Dustproof design can keep the connector of fiber optical power meter clean for a long time, support >20 hours of extra long standby3. SENSITIVE AND DURABLE: The chip of the fiber optical power meter is sensitive, the internal structure is strong, and the service life is long. Possess low battery consumption and continuous operation4. FAST AND ACCURATE: No need to wait for warm up, just plug and play. Fiber optic power meter has accurate test accuracy, optional switching display and automatic power off function5. EFFICIENT MEASUREMENT: In high bandwidth environments, reliable fiber optic power equipment is very important. This handheld optical meter can help check cable performance, calculate relative power losses, locate faults and troubleshootSpecification: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: ≤0.5dBInsertion Loss: ≤1.5dBDetector Type: For InGaAsDisplay Resolution: 0.1dBOptical Fiber Type: SM 9/125μmThreshold Setting: 10 GroupsOptical Connector: For APC(interchangeable SC, ST)Complete Machine Index:Display: Color LCD screenData Storage: 10Data Interface: Micro USBPower Supply: 3 x 1.5V AA batteries(not include)Battery Life: Standby >20 hoursOperating Temperature: -10℃~+50℃Storage Temperature: -40℃~+70℃Relative Humidity: 0~90% No condensation.Package List:1 x Optical Power Meter1 x Storage Bag1 x Accessory1 x User Manual