Indicates wiring problems in Cat 5/E 6 CAT 6A coaxial and telephone cables: open circuit short circuit jumper wire reverse connection. Measures the cable length and determines the distance to the open circuit. The length measurement accuracy up to 97% via built-in calibration. Self-checks and automatically compensates any change in battery capacity or ambient temperature. Up to 50 working hours of the battery life GET THE RIGHT TOOL Spot the wiring problems instantly on the big screen Suitable for Cat 5E 6E coaxial and telephone cable Measures the cable length Suitable for single person use Long battery life Power supply: 4 x 1.5 V DC AA batteries (not included) Power consumption: up to 16 mA Display: 4 x 16 character LCD screen 61.6 x 25.2 mm Designed for: STP/UTP twin twisted coaxial & telephone cable Working ambient temperature: -10 ... + 60oC Tester port: tester RJ45 master port (M) tester LOOPBACK RJ45 port (L) far-end recognizer RJ45 port (R) Max cable length: up to 1350 m Calibration accuracy: 3% (+/- 0.5 m) Calibration cable length: > 5 m Cable problems detected: open circuit short circuit reverse connection crossover or cross-talk interference Automatic shut-down: after 30 minutes Dimensions: 180 x 80 x 40 mm.