Features： 1、SUPPORTS SIX WAVELENGTH: 850, 980, 1310, 1490, 1550, 1625nm wavelength, displayed in the optical power meter on the LCD screen at the same time 2、COMPACT AND PORTABLE: Optical power meter has compact size, simple interface and operation button, easy to use 3、DETACHABLE RJ45 CABLE TESTER: The optical power meter has a built in RJ45 cable tester, detachable and can automatically scan and test the sequence of network cables 4、SUPPORTED INTERFACE TYPE: Optical power meter can be used for various types of optical interfaces, such as FC, SC, and ST 5、ENDURANCE AND LIGHTING: The optical power meter is equipped with 700mAh battery for long working hours, and the LED lights can illuminate in the dark 6、MULTIPLE FUNCTIONS: Optical power meter has cable tracking function(NF 908S), cable continuity test function, check fiber fracture, winding, etc. Specification： Item Type: Optical Power Meter Material: ABS Optical Power Meter Battery: 1 x 3.7V Polymer battery, Battery Capacity: 700mAh Package List： 1 x Optical Power Meter 1 x USB Cable 1 x User Manual