Description:  NF-802 is an intelligent network cable tester, uses advanced digital demodulation to realize anti-interference and no noise tracing cables, functions of wiremap, cable tracing, crimping, and port flash. It can test the polarity recognition of the telephone line, standby , off-hook, ringing, and LED indicator in different states. A tool for installation and maintenance of integrated wiring and weak current systems.     Features:  After track the line, it can directly test the path, short circuit and break of the line sequences to improve the work efficiency.  Strong signal, longer distance, anti-interference, no noise more accurate line tracer.  Only one crystal heads can be tested, too.  Withstand 60V high voltage, do not burn out electrical appliances.  Observe the blinking frequency of the LED indicator on the switch or router to quickly locate the switch cable.  Determining the telephone line status.  USB Cable design, convenient for charging.  Non-contact detection to ensure safety in operation.  With LED lighting, also suitable for dark environment operation.  Receiver knob switch, adjustable sensitivity.     Specifications:  Emiter:  Suitable for network cable: CAT5 CAT6.  Anti-jamming scanning: √.  Low battery prompt: Below 3.3V+0.1V power indicator flashes.  Scrimping response speed: <1s.  Power supply battery: 3.7V, 1400Ah Lithium polymer, battery( included).  Stand-by current: Wiremap / SCAN / QC<25mA, Flash<150mA.  Interface Type: RJ11 RJ45.  Dimension: 60 x 135 x 30mm.  Receiver:  Suitable for network cable: CAT5 CAT6.  Sensitivity adjustment: √.  NCV: √.  lighting: √.  Headphone jack: √.  Wiremap: √.  Power supply battery: 3.7V, 1400Ah Lithium polymer battery(included).  Stand-by current: 35mA.  Maximum working current: ≤280mA.  Dimension: 50 x 198 x 30mm.     Package included:  1 x Transimitter.  1 x Receiver.  1 x Pair of Earphones.  1 x Clip.  2 x Cable.  1 x USB Cable.  1 x User Manual.  1 x Storage Bag