Multifunctional, small and portable wire meter, small, convenient and perfect to take with you. The cable tester can help you quickly find the wires you need among many. Compatible with RJ45 network cable terminal, RJ11 telephone line terminal, which can test other metal wires via adapter Cable Tester Tester Measuring cable, cable level detection, positive and negative polarity, we test a positive and negative polarity through the transmitter tracker Wire, overvoltage protection, data maintenance, stable performance. To build telephone networks, computer networks or other networks with metal wire Toner Ethernet LAN Network Tester The tester tests network cable status, e.g. B. Open circuit, short circuit, open circuit, cable type to improve, incorrect connection and opposite connection Description Cable tester, cable level detection, positive and negative polarity, compatible with RJ45 network cable connector, RJ11 telephone line connector. Features Nylon Scooter Hook -Blue color. -Material: ABS plastic. -Size: 2.36 x 4.96 inches; 8.07 x 1.57 inches. Storage temperature: -10~500℃, maximum relative humidity 80% (non-condensing, no battery) Altitude: <2000m Explosion type: IP40 Signal transmission distance: approx. 300m