Feature: 1. MEASUREMENT OBJECT: Handheld optical power meter series products are mainly used for continuous optical signal power measurement, use a single microprocessor to control, possess complete functions 2. WIDE APPLICATION: Optical power meter is widely used in optical cable construction and maintenance, optical fiber communication, optical cable sensing, optical CAT and other fields 3. ACCURATE AND SAFE: The fiber power meter has a built in detector that makes it well protected. Support multi band high accuracy light decay test with color LCD screen display 4. VARIOUS FUNCTIONS: The optical power meter has a small shape, automatic power off function, wavelength memory function, support manual calibration, fiber optic work recognition, wide testing range 5. FAST RECOGNITION: The fiber light meter support automatic frequency recognition function, and the corresponding frequency icon is automatically displayed when the fiber frequency is received 6. BATTERY INFORMATION: Network cable tester with large capacity lithium battery, more lasting. Battery power 5 grid real time display, remaining power at a glance. Mobile phone charging adapter and mobile power supply can be used to charge the device Specification: Item Type: Optical Power Meter Measuring Range (dBm): -70~+10 Wavelength Range: 800~1700 Interface Type: 2.5mm universal adapter Probe Type: For InGaAs Detection Area (um): 300 Uncertainty: ±5% Standard Wavelength (nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625 Display Resolution: Linear Display: 0.1%, Logarithmic Display: 0.01dBm Operating Temperature (℃): -20~+60 Storage Temperature (℃): -25~+70 Drop Height (m): ≤2 Static Current (uA): ≤2 Working Current (mA): ≤35 Charging Current (mA): 300 Charging Time (h): ≤3 Automatic Shutdown Time: 10min Endurance (h): ≥13 Standby Time (Day): ≥3 Power Supply: Lithium battery or USB external power supply Battery: 1 x Rechargeable lithium battery 400mAh. Package List: 1 x Optical Power Meter1 x USB Cable1 x User Manual