Welcome to the store! Multifunctional, small, and portable wire measuring instrument, compact and perfect for carrying around. The cable tester helps you quickly find the wire pairs you need among many. Compatible with RJ45 network cable terminals and RJ11 telephone line terminals, it can test other metal wires via an adapter. Cable Check Tester measures cable, detects cable level, and positive/negative polarity. We test positive and negative polarity with the transmitter. Wire tracker, surge protection, data maintenance, stable performance. For technical telephone networks, computer networks, or other networks using metal wires. Toner Ethernet LAN Network Tester tests network cable status, such as open circuits, short circuits, open circuits, cable types for improvement, incorrect connections, and reverse connections. Cable tester, cable level detection, positive and negative polarity, compatible with RJ45 network cable terminals, RJ11 telephone line terminals. Features Scooter nylon hook -Blue color. -Material: ABS plastic. -Size: 2.36x4.96 inches; 8.07x1.57 inches. Storage Temperature: -10~500, maximum relative humidity 80% (non-condensing, no battery) Altitude: <2000m Explosion Type: IP40 Signal Transmission Distance: Approx. 300m