Nf-8508 Networks Cable Tester High Sensitivity Optical Power Meter Lcd Display Poe Test Tool Features:Uses: detects and locates fibre breaks, as well as poor connections, fibre bends or cracks.Receiver functions: sensitivity adjustment, 300 m unloaded shielded networks line/non-unloaded shielded networks line, NCV detection, glowing function, etc.Non-contact voltage detection: the receiver can be used to detect the voltage in electrical wiring.Glowing function: The receiver is designed with a light for auxiliary glowing of the working area during operation.Wide range of applications: suitable for telecommunications, computers, other metal conductors and other networks wiring engineering and maintenance work. Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementMeasuring range: 0-2000mMeasurement accuracy: 0.001mSupply voltage: 3.7 (V)