When using the Esd Access Control System, there are times when the card cannot be read suddenly. Usually, when the card cannot be read, pay attention to check the card reading, because generally the card cannot be read because of the card reader. of.

esd is the rapid neutralization of charge. In other words, when a substance gains or loses electrons, it loses its electrical balance and becomes negatively or positively charged. The subsequent deposition of charges on the surface of the material will make the object static.

The Esd Access Control system manufacturer believes that when the card cannot be read, the first thing to do is to start with these three aspects:
1. Check if the card reader is damaged;
2. Check whether the power supply can work normally;
3. Check whether there is strong magnetic interference around the card reader.
After the above three aspects of inspection are done, if the problem persists, the following fault causes can be determined: the card reader will generate static electricity after being used for a period of time, and the accumulation will lead to excessive power consumption, leading to the card reader The aging speed is relatively fast, so we recommend that you must choose a high-quality and high-power dedicated power supply for access control before installation.