Card data encoding uses the BPSK phase shift keying method with strong anti-interference capability Modulation mode of data transmission from card to card reader is load amplitude modulation Data storage with EEPROM, data storage time of more than 10 years Data transmission rate from card to reader of 3.9kbps (THRC12) or 6.62kbps (THRC13) Carrier frequency is 125kHz (THRC12) or 13.56MHz (THRC13) Card number cannot be changed after being written before the card is sealed, which absolutely guarantees uniqueness and security Specifications: Product Name: Access Control ID/IC Card Working Frequency: ID: 125 kHz, IC: 13.56 MHz Sensing Distance: 2-10 mm Shell Material: Industrial ABS Flame Retardant Material Advantages: Sensitive, small and portable, can be put into a handbag or wallet Application: Access control system/identification, low frequency tag card, etc. NOTE: This card is not for copying and does not support machine copying. It can only be used after being authorized by the software provider or approved for use on the access control machine and card management system. Personal use should be purchased with caution Package includes: 10 x RFID Cards