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 effect 2.Please allow 1-3cm deviation due to manual measurement Description: Measuring range: 0-2000m Measurement accuracy: 0.001m Supply voltage: 3.7 V Package List: 1 x Networks Cable Tester