Features: - Compact Body: Integrated detachable design, mini size, lighter & thinner, easy to carry. - High-precision Sensor: High sensitivity & high precision & high response speed. - High-definition LCD Screen: The clear LCD display with backlight enables you to read values clearly even in the dark environment. - LED Lighting Function: Equipped with a small bright LED lamp, capable of playing a role as a flashlight for simple inspection in the dark. - 3 Types of Interface Supported: FC interface, SC interface and ST interface. - 7 Optic Wavelengths for Selection: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm and 1625nm. - DIY Self Calibration: Adjust test parameters at will according to the actual test. - Automatic Shutdown: No operation within 10 minutes, saving energy. - Additional Features: 5km high-definition red light, replaceable ceramic core, selectable intelligent standby mode, energy-saving design, dual mode of power supply, switchable units, network cable test, WiFi test, result storage, wavelength data memory, frequency identification, overcharge protection, over current protection, over voltage protection, over power protection, short circuit protection and temperature protection. - Wide Application: Applied in optic fiber engineering, optic fiber sensor research, optic elements production, optic elements research, etc. Specifications: Material: ABS Color: Yellow Power Supply: 2 * 1.5V AAA battery(NOT included) / USB Connection(use without battery) Connector: FC / SC / ST Power Measuring Range: -70~+3dBm Accuracy: +/-0.2dBm Logarithmic Display Resolution: 0.01dBm Linear Display Resolution: 0.1% Wavelength Range: 800~1700nm Wavelength Reference: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Wavelength of Working Red Light: 650nm Operating Temperature: -10~60 celsius Storage Temperature: -25~70 celsius Automatic Shutdown: No operation within 10 minutes Item Size: Approx. 118*65*30mm / 4.65*2.56*1.18in Item Weight: Approx. 140g / 4.94oz Package Size: Approx. 130*77*60mm / 5.12*3.03*2.36in Package Weight: Approx. 300g / 10.58oz Note: Please read the Users Manual before use. Packing List: 1 * Optical Power Meter 1 * Network Test Module 1 * Ceramic Core 1 * Lanyard 1 * Users Manual(English)