Welcome to our store! SOUND RECOGNITION: This multi-functional network tester can receive audio signals on cable wires and detect the connection of cables or wires. ACCURATE AND NON-DESTRUCTIVE: This network cable tester can accurately trace the location of breakpoints without damaging the insulation layer. FAULT DISTANCE IDENTIFICATION: This network cable tester can measure cable length and accurately locate the fault distance for LAN cables. MULTIPLE FUNCTIONS: This multi-functional telephone line finder can identify or trace wire, test R11 telephone line breaks, and identify telephone line status. SCRATCH-RESISTANT ABS: This Ethernet tester adopts excellent ABS material, which has impact resistance, scratch resistance, and is environmentally friendly. Item Type: Network Cable Tester Material: ABS Color: Yellow Transmitter Battery: 1 x 9V battery (not included) Receiver Battery: 1 x 9V battery (not included) Package Includes: 1 x Transmitter 1 x Receiver 1 x Storage Bag 1 x User Manual Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!