Features 【 Easy and Accurate Testing】Network cable tester is designed for anti-interference and noisefree , capable of tracing network cables, telephone lines, BNC coaxial lines, and various metal wires. With adjustable sensitivity (0-0.5 meters), it ensures precise line detection. 【LED Indicator for Quick Identification】Wire Tracer NF-8209S Equipped with a port flashing function, the tester helps you quickly locate the corresponding wire head on switches or routers by observing the flashing frequency of the LED lights. 【Versatile Applications】Perform cable continuity tests to detect open circuits, short circuits, crossovers, and crosstalk in network cables, telephone lines, and BNC coaxial lines. It’s an essential tool for network installation and troubleshooting. 【 Network Packet Loss Detection】Coaxial Cable Tester can detect packet loss in both local and external networks. It supports automatic IP address acquisition or manual IP modification, making it ideal for completing network setups and layouts. 【 Portable and User-Friendly】Compact and lightweight, this network cable tester is easy to carry for outdoor or on-site work. It features an automatic shutdown function (after 10 minutes of inactivity) and includes a built-in rechargeable battery for convenience. Spec: Item Type: Network Cable Tester Model: NF-8209S Material: ABS Display: LED Indicator Light Transmitter Signa Distance: Approx. > 300m / 984.25ft Output Signa Level: About 23Vp-p, adjustable frequency. Flashlight Lighting: Yes Automatic Shutdown: Yes, automatic shutdown after about 10 minutes without any operat. Transmitter Battery: 3.7V lithium battery 1400mAh, shipped with built in battery. Receiver Battery: 3.7V lithium battery 1400mAh, shipped with built in battery. How to Use: Take out the product and use according to the user manual. packing list: 1 x Network Cable Tester 1 x Receiver 1 x Earphones 1 x RJ11 Adapter Cable 1 x RJ45 Adapter Cable 1 x Crocodile Clip Adapter Cable 1 x USB Cable 1 x User Manual 1 x Tool Kit Package List 1 x Network Cable Tester 1 x Receiver 1 x Earphones 1 x RJ11 Adapter Cable 1 x RJ45 Adapter Cable 1 x Crocodile Clip Adapter Cable 1 x USB Cable 1 x User Manual 1 x Tool Kit