If the equipment has just been installed, you can use the buckle with our factory to test the sensitivity of the card. If the effect is not good, the reader can be taken off the elevator panel to test the card effect. If the interference causes the reader head and the elevator panel to be high, the card can be swiped. 

If our card swiping is normal, the user's own card swiping effect is not good, unrelated to interference, may be the user's own card itself, resulting in insensitive card swiping, it is recommended to replace the card.