50/100PCS IC + ID rewritable dual-chip Keyfob composite key 125 KHZ T5577 EM4305 UID13.56 MHZ writable variable RFID tag | Безопасность

Features: 1.100% brand new, high quality, waterproof, dustproof 2. Sector 0 block that can be changed, 125 khz keychain can be copied arbitrarily 3.Dual frequency, dual chip, compatible 125 kHz and 13.56 MHz access control system 4.Erasable and readable, no external power required   specification: Frequency: 13.56 MHz + 125 Hz Card chip: UID + T5577 / EM4305 dual chip Read / write time: 1 2 2 ms Rewriteable:> 100,100 times Data retention:> 10 years Material: pvc, pet, mosaic Color: blue, yellow, red Size: 43.930.65.3mm Working temperature: -20-85 degrees   Application: Access control, hotel locks, staff assistance, access to school campuses, member management, payment control, identity and security systems, parking entrances, social security management, transportation, municipal and ancillary services.