Package includes： 12 125KHz T5577 RFID cards. Standard 125Khz ID card, supports ID125khz HID125khz card duplication, compatible with standard ID access devices or ID readers. | The same size as credit card, CR80 30 mil. chip type: T5577: thickness: 1.8mm. material: PVC: PVC | Application areas: hotel key cards, access control systems hotel key cards, access control systems, time and attendance systems, packaging cards. | T5577 chip: there is no pre-set ID number, so you need to write the ID number before reading, T5577 card can be read, write and rewrite. | Blank white card, can be printed using a thermal sublimation printer, but does not support inkjet printers.