Welcome to our store! 1, LCD Screen: Portable line finder, equipped with an LCD display, which can display the test results intuitively. The main menu has the functions of WireMap, Pair & Length, Coax/Tel and SETUP. 2、Multiple Uses: Suitable for testing network cable length and breakpoint, connection test, and calibration function of network cable on-off, crossover, and short circuit length. 3、Efficient and Reliable: Equipped with 8pcs remote adapters, high measurement accuracy, small errors, high efficiency, and work efficiency is improved. 4、Lightweight and Easy to Carry: This portable line finder is small and lightweight, compact in structure, easy to carry and use, and has a calibration function. 5、Voltage Protection: Compatible with RJ45 connector, supports AC 60V/DC 42V voltage protection, low battery display, cable test maximum distance is about 1000 meters. Item Type: Network Cable Tester Material: ABS Model: NF-8108-M Battery: 4 x AA 1.5V Battery (Battery Not Included) Purpose: Cable Length and Connection Test Display: LCD Screen 53x25 mm / 2.1x1.0 in Sound Frequency: 225Hz Maximum Cable Test Distance: 1000 meters Compatible Connector: RJ45 Function Selection: 3 Mode Buttons and 1 Power Switch Error LCD Display: LCD Screen Voltage Protection: AC 60V/DC 42V Low Battery Display: LCD Display (6.5V) 1 x Host (Battery Not Included) 8 x Remote Unit 1 x Tool Bag 1 x Manual Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.