Feature:1. DUAL WAVELENGTH: This optical fiber power meter features single mode dual wavelength 1310nm and 1550nm, with stable light source.2. FAST AND ACCURATE: This mini optical power meter offers fast and accurate readings, is easy to use, and requires no warm up time.3. MULTI FUNCTION: Equipped with relative power calculation and calibration function, the fiber optic power meter ensures maximum accuracy and reliability.4. LONG BATTERY LIFE: With low power consumption, the optical fiber power tester can work continuously for up to 120 hours.5. RJ45 LINE FINDING: The optical light source has a RJ45 line finding function, meeting daily network communication maintenance needs.Specification:Item Type: Optical Fiber Power MeterMaterial: ABSModel: AUA M1315Wavelength: 1310nm 1550nmOutput Power: -5dBOptical Connection: SC FC, 2.5MM UniversalPower Supply: Require AA battery x 2 (Not Included)Output Stability: 0.05dB/15MIN, 0.1dB/8HModulation Frequency: CW, 270Hz, 1KHz, 2KHz.Package List:1 x Optical Fiber Power Meter1 x SC Adapter1 x FC Adapter (Installed On The Device)1 x User Manual