Features QUICK WIRE SEARCH - Online fast tracing, this network cable tester also has strong signal for wide test range with low noise, very reliable. Useful Wire Tester: Applicable to intelligent test of internet cable, telephone line, RJ45 and RJ11 wires, etc., with standard design. EASY ADJUSTMENT - The tones can be adjusted according to the environment, just turn the dial slightly and the tones can be easily controlled. Best Application Ensure wide use in technical wiring, engine room maintenance and other scenarios, meeting your work needs. Convenient Carrying - Comes with compact size and light weight, the ethernet cable tester is very convenient to carry outside. Specification: Item Type: Network Cable Tester Model No.: TM-8 Material: ABS Transmitter battery: 1 x 9V battery, not included. Receiver battery: 1 x 9V battery, not included. Maximum working current: Transmitter: ≤ 20mA. Receiver: ≤150mA Signal transmission format: multifrequency pulse Electrical status of signal output: 8Vp-p Signal transmission distance: approx. ≥ 3000m/9842.52ft Package list: 1 x Transmitter 1 x receiver. 1 x helmet. 1 x RJ45 Network Cable 1 x RJ11 Telephone Cable 1 x Alligator Clip Cable 1 x user manual (English language not 1 x carry bag Package List 1 x Transmitter 1 x Receiver 1 x Headphone 1 x RJ45 Network Cable 1 x RJ11 Telephone Cable 1 x Crocodile Clip Cable 1 x User Manual 1 x Carrying Bag