Features Wide application: it can detect open circuit, short circuit, straddle, reverse connection and series winding of the circuit. Remote sensing - The remote detector has an audio prompt function, a lightweight design for comfortable carrying and an LCD screen for easy reading. Quick to test -- The network tester can quickly measure the continuity, order and position of the cable by automatically scanning the cable. Automatic shut-off delay function - With long battery life, 50 hours in standby mode, automatic shut-off delay function. Easy to use - Both before and after installation, the cable can be easily tested, easy to use and quickly tested. Specification: Item Type: Cable Tester Material: plastic. Tester port: RJ45 RJ11 BNC Battery: 4 x AAA 8mA (not included). LCD screen: 35 x 17 mm/1.4 x 0.7 inches. Working temperature: -10 ℃ to +40 ℃. Size: approx. 123.7 x 66.5 x 24.5 mm / 4.9 x 2.6 x 1 inches. Weight: approx. 387 g / 13.65 oz. Package list: 1 x producer. 1 x receiver. 1 x instruction manual 4 x test cables Package List