As a door lock, its stability is also very important. The door cannot be opened when it should be opened, and the door cannot be closed when it should be closed, which may cause serious losses to financial enterprises. Generally speaking, among several electronic door locks, the stability of RF card electronic door locks is significantly higher than that of other electronic door locks. Magnetic card is afraid of strong magnetic field, IC card is afraid of oil stain, dust and static electricity (especially in dry weather), while RF card is fully sealed, waterproof, anti-static and dustproof. In terms of card reading mode, only RF card reading is not contacted, and its service life is the longest.