1. One-button operation is simple, multi-interface test, buzzer sound 2. One-button test, buzzer prompt, fast and accurate 3. Multi-functional detection, one machine can be done: it can test the connection, crossover and short circuit of network cable, telephone cable, BNC cable and USB cable 4. Function: BNC+RJ11+RJ45+USB cable detection 5. Power supply: 9V battery interface (default without battery) 6. Scope of application: metal lines such as telecom bureaus/Internet cafes/telecom engineering 7. Product configuration: tester, BNC adapter, English manual, leather bag 8. Size: 160 x 85 x 25mm 9. Weight: 234.1g