10 PCS 125KHz TK/EM4100 Proximity ID Card Chip Keychain Key Ring (Red)

Enhance your security and access control with these versatile 125KHz proximity ID card chip keychains. Equipped with EM4100 and TK4100 chip types, these keychains offer a range of features and applications:

• Dimensions: Approximately 35 x 29 x 5mm
• Response frequency: 125KHz
• Chip type: EM4100, TK4100
• Operation Temperature: -40-85 Degrees Celsius
• Waterproof for added durability
• Application scope: Public transportation, parking, ID identification, attendance system, ticketing, card payment, product logo, etc.

Each keychain comes with a key ring included and is pre-programmed with a unique ID which is laser printed. The key features of these proximity ID card chip keychains include:

• Carrier frequency of 125KHZ (THRC12)
• Strong anti-interference ability with loading amplitude modulation
• Data encoding using BPSK phase shift keying method
• Data storage on EEPROM with a storage time exceeding 10 years
• 64 data storage capacity, including manufacturer, publisher, and user code
• Fixed and safe card number that cannot be changed after being written before the seal
• Versatile packaging options for different applications

Secure, durable, and versatile, these proximity ID card chip keychains are ideal for various access control and identification needs.