ANENG M469A Smart Network Cable Tester RJ45 RJ11 LAN Cable Tester and Wire Tracker Receiver Features: Telephone Line Search Network Line Search Power Cable Line Check Open and Short Circuit Tests DC Voltage Test Low Voltage Warning with Prompt Function Adjustable Volume Control Headset Listening with Earphone Function Spotlight Function Energy Saving How to Use: Insert the RJ45 connectors at both ends of the network cable into the corresponding ports of the transmitter and receiver. Turn the transmitter's function selector switch to "test." The "VERIFY" indicator will light up, signaling normal operation. Identify issues such as short circuits, open circuits, or crossovers using the display of 18 lights. Switch between fast and slow modes using the "switch" button during tests. The automatic scanning method quickly tests each twisted pair (1,2,3,4,5,6,7,8,G) and helps distinguish problems such as disordered, shorted, or open circuits. Package Includes: 1 x Receiver 1 x Transmitter 1 x RJ11 Adapter 1 x RJ45 Adapter 1 x Alligator Clip 1 x Headset 1 x Operation Manual 1 x Storage Bag 1 x Packing Box