Feature: 1. The product has stable performance and long service life 2. The product can be ability to make fast and accurate measurements 3. Split design, easy to use and carry 4. Adopt high-quality materials, anti-shock and anti-fall, suitable for a variety of environments 5. Standard multi-port, simultaneous testing and smooth to connect Specification: Item Type: Wire TrackerPower Supply: 9V DC laminated battery(not included) Maximum Working Current: Transmitter ≤10mA; receiver: ≤30mA Signal Transmission Format: Multi-frequency pulse Signal Output Level: 8Vp-p Signal Transmission Distance: ≥3km Testable Port: RJ11 RJ45 Testable Wire: Twisted pair, video line, telephone line, ordinary metal wire, etc. Operating Temperature: -10℃-60℃ Operating Humidity: 20%-70%. Package List: 1 x Transmitter 1 x Receiver 1 x Earphone 1 x RJ11 Adapter Cable 1 x RJ45 Adapter Cable 1 x Crocodile Clip Adapter Cable 1 x User Manual Note: New‑style and old‑style are shipped randomly