Features APPLICABLE SCENARIO: Handheld optical power meter is mainly used for continuous optical signal power measurement, optical fiber line on off test, optical fiber line troubleshooting and optical fiber line loss test, using low power single chip microproces WAVELENGTH SWITCHING: Optical power meter support standard wavelength switching of 850, 980, 1300, 1310, 1490, 1550 and 1625nm. Applicable to 800‑1700nm optical fibers, compatible with SC, FC ST connectors POWERFUL FUNCTION: Mini optical power meter has backlight switch button and flashlight function, automatic shutdown function, wavelength memory function, user calibration function. Ultra wide optical power test range, support linear mW and non linear ind BODY SHAPE: The design of the optical power meter meet the ergonomic requirements, and adopt the advanced cold molding process, which is beautiful and durable. The built in detector can be well protected WIDELY USED: Optical fiber power meter is mainly used in optical cable construction and maintenance, optical fiber communication, optical fiber sensing, optical CATV and other fields Specification: Item Type: Optical Power Meter Material: ABS Power Supply: 3 x AAA alkaline dry battery(not included) Power Measurement Range: -50~+26dBm Probe Range: For InGaAs Wavelength Range: 800-1700nm Standard Wavelength (nm): 850, 980, 1300, 1310, 1490, 1550, 1625 Display Resolution: Linear Display: 0.1%, Logarithmic Display: 0.01dBm Operating Temperature: -10~+60℃ Storage Temperature: -30~+70℃ Automatic Shutdown Time (min): 120s LCD Display Description: The measured power value is displayed in the form of dB, dBm, mW, uW, nW Color: Green Package List:1 x Optical Power Meter 1 x User Manual Package List 1 x Optical Power Meter 1 x User Manual