1、Back Clip Design: Ergonomically designed with back clip, small in size and light in weight, easy to put into a clothes or pant pocket. 2、Energy Saving: When the meter is in power saving function, will automatically shut down if there is no operation for 10 minutes, save power greatly. 3、7 Wavelengths: The meter has 850nm 980nm 1300nm 1310nm 1490nm 1550nm 1625nm 7 wavelengths, which can be switched at will. 4、LED Light and Universal Interface: Equipped with LED, easy to operate in dark environment, 2.5mm universal interface can meet multiple needs, you can replace the adapter head and ceramic core. 5、Self Calibration Function: The meter has self calibration function, you can adjust the value by yourself, the measurement is flexible and accurate. Item Type: Fiber Optical Power Meter Material: ABS Wavelength Range: 800-1700nm Probe Type: InGaAs Interface: 2.5mm general interface Error: <0.2dB Standard Wavelength: 850nm 980nm 1300nm 1310nm 1490nm 1550nm 1625nm Display Resolution: 0.01dB Operating Temperature: -10℃ to +60℃ Storage Temperature: -25℃ to +70℃ Automatic Shutdown Time: 15 min Working Hours: 20 hours LED Flashlight: Support Power Supply: 2 x AA battery 1.5V (not included) 1 x Fiber Optical Power Meter