Features: Cable tester & tracer for RJ11, RJ45 etc. Lan cable testing functions includes:cable continuity testing, cable length measurement etc Capable to judge wrong connection, short circuit and open circuit. It can easily clarify cable, continuity, open and short. Verifying cable continuity, open, short and for cross wire pair with wiremap adapter. Package Includes: 1 X Network Cable Tester 1 X User Manual Specifications: Model: PN 8108 Item Type: Network Cable Tester Fit for: RJ11, RJ45 Material: PC Color: Yellow Size: approx 18x8x4cm/7.08x3.15x1.57in Power: 9V battery ( Not Included ) note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.