Feature:1. Cable Finding: Able to locate RJ45 interface network cable, RJ11 interface telephone cable other cables, simple and useful.2. Broad Utility: Enables wide application in engineering wiring, computer room maintenance and so on, very simple to operate.3. Good Earphone: Can connect to external earphone to isolate the ambient noise, which also better facilitates the monitoring.4. With Lighting: The light on receiver largely simplifies works in the dark, while the crocodile clip ensures easier testing.5. Easy Carrying: Comes with a compact size and a light weight as well, so both the storage and carrying are convenient.Specification:Item Type: Cable TesterModel: SW-801AMaterial: ABSTransmitter Battery: 2 x 1.5V AAA (not included)Receiver Battery: 2 x 1.5V AAA (not included)Application: For network finding, telephone line finding, cable line finding. Can detest RJ45 interface network cable and RJ11 interface telephone line, and widely used in engineering wiring, computer room maintenance and other scenarios. Function: Wire finding, wire sequence testing, auxiliary function and wire testing. .Package List:1 x Transmitter1 x Receiver1 x Network Testing Cable1 x Earphone1 x Crocodile Clip1 x User Manual1 x Carrying Bag