Feature: 1. 3 WAVELENGTHS: Handheld PON optical power meter, can test 1310nm, 1490nm, 1550nm wavelengths at the same time, convenient and reliable. 2. TEST INTERFACE: Support FC SC interface adapter, and with USB interface, which can be connected to external power. 3. MULTIPLE FUNCTIONS: Support data storage, auto power off, backlight selection, auto calibration, user calibration, threshold setting, has multiple functions. 4. LCD DISPLAY: The optical power meter adopts color LCD display screen design, the test results are clear at a glance, and it supports 10 data storage. 5. COMPACT SIZE: The optical fiber power tester has compact structure, simple button interface, simple operation and has a wide application range. Specification: Item Type: Optical Power Meter Model: AUA 320U Material: ABS Display: Color LCD Screen Detector Type: For InGaAs Fiber Type: SM9 125μm Data Storage: 10 Data Interface: Micro USB Power Supply Mode: 3 x AA batteries required, and can also be used with an external power supply (USB 5V port), not rechargeable (not included battery) Wavelength: 1310nm, 1490nm, 1550nm can be tested at the same time Testable Connectors: SC FC connectors. Package List: 1 x Power Meter1 x Storage Bag1 x Lanyard1 x User Manual2 x SC/Adapter (Installed on Meter)2 x FC Adapter