Feature: 1. TESTING RANGE: The measurement range of this optical power meter is ‑70‑6, suitable for FC SC ST universal interface, with high accuracy and good stability. 2. OPTICAL TEST: Can be used to determine whether the emission mode is continuous or intermittent, with convenient operation, stable and reliable performance. 3. MULTI FUNCTIONS: Support lighting, automatic shutdown, backlight selection, wavelength memory, and user calibration function to meet more testing needs. 4. LED FLASHLIGHT: This optical power meter is equipped with LED flashlight lighting, which easily cope with dim environment and ensures efficient work. 5. BUILT IN BATTERY: This handheld power meter has a built in 1500mAh lithium ion battery, ensuring longer endurance, and can be used anytime, anywhere. Specification: Item Type: Optical Power Meter Model: G9-Y00 Material: ABS Wavelength Range: 800-1700 Detector Type: For inGaAS Power Measurement Range: -70-6 Error: ±5% Standard Wavelengths: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Display Resolution: Linear Display: 0.1% Logarithmic Display: 0.01dBm Red Light Working Wavelength: 650nm Frequency Identification: 270HZ, 1000HZ, 2000HZ Saved Data Quantity: 20pcs Working Temperature: -10-60℃ Storage Temperature: -25-70℃ Automatic Shutdown Time: 10 Minutes Power Supply Battery: 1 x 1500mAh Lithium Ion Battery (built in) Charging Voltage: DC 5V. Package List: 1 x Optical Power Meter1 x Charging Cable1 x User Manual