XYBkey 100-Pack RFID Keychain 13.56MHz Access Control Card IC Card Suitable for Access Control System Keychain Card Token Tag (Blue)

["NOTE: These are 13.56 MHz key fobs (tags). If you want to register them to your lock system, please make sure your system uses the same 13.56 MHz frequency.","Durable Material: Made of high-quality ABS waterproof material, lightweight and durable, equipped with a metal key ring for easy carrying and use.","Wide application: Suitable for apartments, office buildings, factories, communities, parks and other access control places.","Stable performance: operating frequency 13.56MHz, sensitive sensing, reading distance up to 0-10cm, and fast recognition.","Suitable for use with 13.56MHz RFID proximity access control and identity management systems. For example, it can be registered as a new key in an RFID door lock, where applicable."]