Feature: 1. [Automatic Wavelength Memory] The optical fiber power meter supports 7 wavelengths (850 980 1300 1310 1490 1550 1625nm) and features automatic wavelength memory function for added convenience. 2. [Accurate Line Sequence Testing] The fiber optic power meter offers accurate measurement of network cable sequence, effectively determining signal transmission, ensuring excellent networking performance. 3. [Threshold Setting] The optical power meter enables threshold setting, when the measurement results fall below the set value, a red warning will appear on the screen, providing timely alerts. 4. [Universal Interface] Compatible with SC, ST, FC interfaces, the fiber power meter is a versatile tool, offering flexibility for various optical cable testing needs. 5. [LED Light] Equipped with LED light, the fiber optic cable tester aids cable line checking on field even under dark conditions, enhancing convenience for the users. Specification: Item Type: Optical Fiber Power Meter Network Testing: Interface RJ45 Wavelength Range: 800-1700nm Probe Type: InGaAs Interface: 2.5mm Universal Interface Power Measurement Range: -70 to +6 dBm Accuracy: ±0.2dB Standard Wavelengths: 850, 980, 1300, 1310, 1490, 1550, 1625 (nm) Display Resolution: 0.01dB Operating Temperature: -10 to +60 (℃) Storage Temperature: -25 to +70 (℃) Auto Power Off Time: 10 Minute Power Supply Operating Time: Battery Powered Version: 20 Hours (Optical Power Meter Only) LED Flashlight: Support Power Source: 2 x AA Batteries (Not Included) Size: Approx. 112x57x31mm / 4.41x2.24x1.22in. Package List: 1 x Optical Fiber Power Meter 1 x Carrying Bag