Welcome to our store. Our products have affordable prices and good quality. We support dropshipping and wholesale . If you want to work with us for a long time, please contact us and we will give you a very favorable price.Best Regards! 1. JW-360 line finderne finder adopts advanced frequency generating device, which can generate alarm sound at the audio sounding end. The closer the distance, the louder the sound. 2. In a noisy environment, you can use an external earphone to listen to the sound recognition, and you can also search for other metal cables through the adapter. 3. The transmitter has a DC level test function, and the level can be judged by the brightne of the status indicator: the brighter the light, the higher the level; the darker the light, the lower the level. 4. You can adjust the volume button at will when searching for a line, and the volume of the sound is controlled by you. In a noisy environment, you can also wear headphones to operate to avoid external interference. In the dark or dark environment, the receiving end is also illuminated The indicator light brings convenience and speed to all staff. This line finder is the most advanced network wiring instrument on the market. Name: Internet Phone Finder Maximum operating current: transmitter 10MA; receiver 30MA Signal output level: 8Vp-p Signal transmiion distance: 1KW Colour:black+yellow Material:plastic Package Contents: 1 x Network Cable Tester(Without 9V battery) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Due to the difference between different monitors, the image may not reflect the actual color of the item. We guarantee that the style is the same as shown in the images, but not the same performance in different bodies than in the model. 2. Compare the detail sizes with yours, there may be differences of 2-4 cm due to the manual measurement of the product, thanks to all the measures in cm and ten cm in cm 1 cm = 0.39 inches