Welcome to our store! 1. 3 WAVELENGTHS: Handheld PON optical power meter, capable of testing 1310nm, 1490nm, and 1550nm wavelengths simultaneously, offering convenience and reliability. 2. TEST INTERFACE: Supports FC and SC interface adapters, and includes a USB interface for connection to external power. 3. MULTIPLE FUNCTIONS: Supports data storage, auto-off, backlight selection, automatic calibration, user calibration, and threshold setting, offering a range of functionalities. 4. LCD DISPLAY: The optical power meter features an LCD color screen design, providing clear test results at a glance and supporting 10 data storage entries. 5. COMPACT SIZE: The optical fiber power tester has a compact structure, a simple button interface, and is easy to operate, making it suitable for a wide range of applications. Item Type: Optical Power Meter Model: AUA 320U Material: ABS Display: LCD Color Screen Detector Type: For InGaAs Fiber Type: SM 9/125μm Data Storage: 10 Data Interface: Micro USB Power Supply Mode: Requires 3 x AA batteries, or can be powered by an external source (USB 5V port). Not rechargeable! (Batteries not included) Wavelengths: 1310nm, 1490nm, 1550nm can be tested simultaneously Testable Connectors: SC, FC connectors 1 x Power Meter 1 x Storage Bag 1 x Lanyard 1 x User Manual 2 x SC Adapters (installed on the meter) 2 x FC Adapters Customers are our top priority. If you encounter any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.