Feature:1. MAIN PURPOSE: This handheld optical power meter is mainly used for measuring the power of continuous optical signals, supporting multi band high accuracy optical attenuation testing.2. LCD SCREEN: The optical power meter adopts a color LCD screen display, with a measurement range of 706dBm, and 5 grid real time battery level display, which is clear and intuitive.3. GOOD PERFORMANCE: Controlled by a single chip microprocessor, with built in detector for good protection, supports manual calibration, fiber optic work recognition, and wide testing range.4. MULTIPLE FUNCTIONS: With automatic shutdown and wavelength memory function, support automatic frequency recognition, automatically displaying corresponding icons upon receiving fiber frequency.5. POWER SUPPLY: This optical power meter has built in 400mAh lithium battery to ensure longer endurance, supports phone charging adapter and mobile power supply to charge the device.6. APPLICABLE FIELDS: This portable optical power meter is widely used in fields such as fiber optic construction and maintenance, fiber optic comm, fiber optic sensing, and optical CAT.Specification:Item Type: Optical Power MeterMeasurement Range: -70-6dBmWavelength Range: 800-1700Interface Type: 2.5mm Universal AdapterProbe Type: For InGaAsDetection Area: 300umUncertainty: 5%Standard Wavelength: 850nm, 980nm, 1270nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm, 1625nmDisplay Resolution: Linear Display: 0.1%, Logarithmic Display: 0.01dBmWorking Temperature: -20-60Storage Temperature: -25-70Drop Height: 2 meter / 6.6ftStatic Current: 2uAWorking Current: 35mACharging Current: 300mACharging Time: 3hAutomatic Shutdown Time: 10 MinRange Time: 13hStandby Time: 3 DayPower Supply: Lithium Battery or USB External Power SupplyBattery: 1 x 400mAh Rechargeable Lithium Battery (built in battery).Package List:1 x Optical Power Meter1 x USB Cable1 x User Manual