Features: RJ11 and RJ45 wires can be found through transmitter. It is simple and faster to find the cable without stripping the outer skin of the cable; The cable trackers are multi-functional hand held cable testing tool. It is a necessary testing tool for telecommunication engineering and network maintenance technicians or advanced DIY. Suitable for PoE-Tracking,Tracking Cable, Network Cable Tracking,Telephone Cable Tester and On-off Setection; Specifications: Material:ABS Color: Black Transmission distance:>300m Signal Strength Display: LCD-Screen Maximum Tolerable DCVoltage: 60V Battery(not included): 6F22/9Vx2 ( battery is not include ) Transmitter: 135mmx68mmx37mm Receiver: 192mmx45mmx33mm PoE-Tracking: YES Tracking Cable: YES Network Cable Tracking: YES Telephone Cable Tester: YES On-off Setection: YES Detect cable type: RJ45/RJ11 Package Includes: 1xCable Emitter 1xCable Receiver 1xNetwork Cable 1xCable with Crocodile-clamp 1x Earphone 1xPortable bag 1x Manual 1xKraft box note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.