- Indicates wiring problems in Cat 5E, 6E, 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 Specification: - 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 ... + 60°C - 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 - Net weight: 0.25 kg.