self-adhesive RFID disk | 125 kHz EM4100 chip | 4.5 mm thick | only readable | not to be put on metal
self-adhesive RFID sticker | 125 kHz EM4100 chip | 1.5 mm thick | only readable | not to be put on metal
self-adhesive RFID sticker | 125 kHz EM4305 chip | 1.5 mm thick | readable/writable | not to be put on metal