the card ID number from the EM4100 or compatible card or keyfob for access control application.
2. Support 125KHz EM4100 or compatible card (can\'t support HID card)
3. with read/write button,easy to operate.
4.With battery slot,don\'t need connect to computer for operation.
5.With Led and buzzer indicators.
6.power supply:3V (2X AAA batteries)
The package including:
1pc 125khz EM4100 testing card (only read)
10pcs writable cards+10pcs wristbale key tags+operate instruction+125khz card copier