Specifications: Magnetic ring function: The magnetic ring can play a good anti-interference role and can prevent the display shielding, snowflakes and surrounding various signals from invading the equipment. Under the magnetic ring, normal and useful signals can pass through well, and high-frequency interference signals can be well suppressed. So it's not surprising that you can see magnetic rings on electronic equipment, machinery, even high-end data lines and signal lines. If you want to play a larger role in the magnetic ring, you can wind the cable around the magnetic ring for a few turns. The more revolutions, the better the noise suppression effect at the lower frequency, while the noise suppression effect at the higher frequency is weak. The number of turns of the magnetic ring should be adjusted according to the frequency characteristics of the interference current. Generally, when the frequency band of the interference signal is wide, two magnetic rings can be added to the cable, and each magnetic ring has different rotations, so that high-frequency and low-frequency interference can be suppressed at the same time. The magnetic ring is an essential anti-interference component in the electronic circuit. It is usually made of zinc oxide, nickel oxide, iron oxide and other ferrite materials by forming, sintering, grinding and other processes. Features: Size: 12*100mm,12*200mm Material: Zinc Nickel Square Ratio 20Coercence 35 (A/m) Residual Magnetism 1200 (mT) Package Include: 1*High Frequency Magnetic Rod