Feature: 1. Wavelength Testing: High accuracy handheld PON power meter, supporting the testing of 1310nm, 1490nm, and 1550nm wavelength signals in PON networks, with filtering function, and a wide measurement range. 2. Portable Design: This PON power meter is lightweight and portable, easy to use and carry, suitable for use in different environments. Featuring clear display and simple buttons, convenient and practical. 3. High Accuracy Measurement: The optical power meter adopts for InGaAS sensor, which have high accuracy, good stability and reliability. Supports 900 sets of data storage, with strong practicality. 4. LED Display Screen: This fiber optic tester adopts a backlight LED LCD display screen, which is suitable for working under different lighting conditions. Clear and intuitive, greatly improving work efficiency. 5. Sturdy and Practical: This portable PON power meter is made of excellent materials, with high strength, wear resistance, impact resistance, long service life, and is suitable for various environments. Specification: Item Type: PON Power Meter Sensor Type: For InGaAS Display Resolution: 0.01dB Threshold Setting: 10 sets, set by the host computer Calibration Wavelength: 1310nm, 1490nm, 1550nm Data Storage: 900 Sets Operating Temperature: -10-50℃ Relative Humidity: 0%-95%RH Interface Type: For APC, SC Battery Type: 2 x AA Battery (not included) Measuring Wavelength 1310nm 1490nm 1550nm Isolation Degree with Filter Function 1490nm Band >40dB 1310nm Band >40dB 1310nm Band >40dB 1550nm Band >40dB 1550nm Band >30dB 1490nmBand >30dB Measuring Range -40dBm-16dBm -50dBm-16dBm -50dBm+23dBm Measuring Optical Frequency Broadband 1260-1360 1480-1500 1539-1565 . Package List: 1 x PON Power Meter