The S6-Ble is a Bluetooth-enabled waterproof RFID Access Reader. It's integrated with TTLock APP, which supports adding/deleting a Card user, and sending eKeys. It's available for both iOS and Android, supporting multiple languages > Waterproof, conforms to IP66 > Metal housing, anti-vandal > Card type: 13.56MHz Mifare Card, DESFire EV1, DESFire EV2 > iOS and Android available... https://www.secukey.net/Product/Smart_Access/TTLock_Access/546.html